java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:19:11,773 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:19:11,775 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:19:11,788 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:19:11,789 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:19:11,790 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:19:11,791 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:19:11,793 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:19:11,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:19:11,795 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:19:11,796 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:19:11,834 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:19:11,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:19:11,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:19:11,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:19:11,856 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:19:11,856 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:19:11,857 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:19:11,857 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:19:11,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:19:11,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:19:11,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:19:11,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:19:11,952 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:19:11,953 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:19:11,953 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-23 15:19:11,954 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-07-23 15:19:12,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:19:12,014 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:19:12,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:19:12,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:19:12,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:19:12,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:19:12,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:19:12,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:19:12,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:19:12,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/1) ... [2018-07-23 15:19:12,140 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-23 15:19:12,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:19:12,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:19:12,348 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:19:12,349 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:19:12 BoogieIcfgContainer [2018-07-23 15:19:12,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:19:12,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:19:12,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:19:12,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:19:12,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:19:12" (1/2) ... [2018-07-23 15:19:12,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49094fb1 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:19:12, skipping insertion in model container [2018-07-23 15:19:12,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:19:12" (2/2) ... [2018-07-23 15:19:12,361 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-23 15:19:12,372 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:19:12,382 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:19:12,432 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:19:12,432 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:19:12,433 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:19:12,433 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:19:12,433 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:19:12,433 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:19:12,434 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:19:12,434 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:19:12,434 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:19:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-23 15:19:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:19:12,457 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,458 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,459 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash 889618619, now seen corresponding path program 1 times [2018-07-23 15:19:12,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:12,538 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:19:12,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:19:12,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:19:12,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:19:12,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:19:12,561 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-23 15:19:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:12,589 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-07-23 15:19:12,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:19:12,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-07-23 15:19:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:12,602 INFO L225 Difference]: With dead ends: 14 [2018-07-23 15:19:12,602 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:19:12,606 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:19:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:19:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:19:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:19:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-23 15:19:12,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-23 15:19:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:12,644 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-23 15:19:12,644 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:19:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-23 15:19:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:19:12,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,645 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,646 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,646 INFO L82 PathProgramCache]: Analyzing trace with hash 141442743, now seen corresponding path program 1 times [2018-07-23 15:19:12,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:12,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:12,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:19:12,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:19:12,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:19:12,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:19:12,681 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-07-23 15:19:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:12,701 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-07-23 15:19:12,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:19:12,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 15:19:12,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:12,702 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:19:12,703 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:19:12,704 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:19:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:19:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:19:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:19:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 15:19:12,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-23 15:19:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:12,708 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 15:19:12,708 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:19:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 15:19:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:19:12,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,709 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,709 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1596035661, now seen corresponding path program 2 times [2018-07-23 15:19:12,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:12,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:12,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:19:12,745 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:19:12,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:19:12,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:19:12,746 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2018-07-23 15:19:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:12,779 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-23 15:19:12,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:19:12,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-07-23 15:19:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:12,782 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:19:12,782 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:19:12,783 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:19:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:19:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:19:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:19:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-23 15:19:12,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-23 15:19:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:12,791 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-23 15:19:12,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:19:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-23 15:19:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:19:12,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,792 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,793 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,794 INFO L82 PathProgramCache]: Analyzing trace with hash -570503761, now seen corresponding path program 3 times [2018-07-23 15:19:12,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:12,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:12,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:19:12,877 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:19:12,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:19:12,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:19:12,878 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-07-23 15:19:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:12,904 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-07-23 15:19:12,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:19:12,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-23 15:19:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:12,905 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:19:12,905 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:19:12,906 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:19:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:19:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:19:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:19:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-23 15:19:12,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-23 15:19:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:12,911 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-23 15:19:12,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:19:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-23 15:19:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:19:12,912 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,912 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,912 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1418141355, now seen corresponding path program 4 times [2018-07-23 15:19:12,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:12,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:12,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:19:12,957 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:19:12,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:19:12,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:19:12,961 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-07-23 15:19:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:12,990 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-07-23 15:19:12,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:19:12,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-23 15:19:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:12,992 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:19:12,992 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:19:12,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:19:12,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:19:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:19:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:19:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-23 15:19:12,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-23 15:19:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:12,997 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-23 15:19:12,998 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:19:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-23 15:19:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:19:12,998 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:12,999 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-23 15:19:12,999 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1245651111, now seen corresponding path program 5 times [2018-07-23 15:19:12,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:19:13,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:19:13,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:19:13,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:19:13,042 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-23 15:19:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,073 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-23 15:19:13,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:19:13,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:19:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,074 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:19:13,075 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:19:13,077 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:19:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:19:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:19:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:19:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-23 15:19:13,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-23 15:19:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,088 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-23 15:19:13,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:19:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-23 15:19:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:19:13,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,089 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,090 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1308716125, now seen corresponding path program 6 times [2018-07-23 15:19:13,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:19:13,182 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:19:13,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:19:13,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:19:13,185 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-23 15:19:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,222 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-07-23 15:19:13,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:19:13,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:19:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,224 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:19:13,224 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:19:13,225 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:19:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:19:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:19:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:19:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-23 15:19:13,236 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-23 15:19:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,236 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-23 15:19:13,236 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:19:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-23 15:19:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:19:13,237 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,237 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,238 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,238 INFO L82 PathProgramCache]: Analyzing trace with hash 665663391, now seen corresponding path program 7 times [2018-07-23 15:19:13,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:19:13,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:19:13,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:19:13,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:19:13,325 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2018-07-23 15:19:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,357 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-23 15:19:13,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:19:13,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-23 15:19:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,358 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:19:13,358 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:19:13,359 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:19:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:19:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:19:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:19:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-23 15:19:13,364 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-23 15:19:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,365 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-23 15:19:13,365 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:19:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-23 15:19:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:19:13,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,366 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,366 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,367 INFO L82 PathProgramCache]: Analyzing trace with hash -331166565, now seen corresponding path program 8 times [2018-07-23 15:19:13,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:19:13,428 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:19:13,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:19:13,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:19:13,429 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 11 states. [2018-07-23 15:19:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,447 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-23 15:19:13,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:19:13,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-07-23 15:19:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,448 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:19:13,448 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:19:13,449 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:19:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:19:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:19:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:19:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-23 15:19:13,454 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-23 15:19:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,455 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-23 15:19:13,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:19:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-23 15:19:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:19:13,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,456 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,456 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash -507047273, now seen corresponding path program 9 times [2018-07-23 15:19:13,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:19:13,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:19:13,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:19:13,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:19:13,520 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2018-07-23 15:19:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,539 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-07-23 15:19:13,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:19:13,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-07-23 15:19:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,540 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:19:13,540 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:19:13,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:19:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:19:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:19:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:19:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-23 15:19:13,546 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-23 15:19:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,547 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-23 15:19:13,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:19:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-23 15:19:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:19:13,548 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,548 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,548 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2024683117, now seen corresponding path program 10 times [2018-07-23 15:19:13,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:19:13,598 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:19:13,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:19:13,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:19:13,599 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 13 states. [2018-07-23 15:19:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,614 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-07-23 15:19:13,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:19:13,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-07-23 15:19:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,616 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:19:13,616 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:19:13,616 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:19:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:19:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:19:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:19:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-23 15:19:13,622 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-23 15:19:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,622 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-23 15:19:13,622 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:19:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-23 15:19:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:19:13,623 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,624 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,624 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash -183848561, now seen corresponding path program 11 times [2018-07-23 15:19:13,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:19:13,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:19:13,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:19:13,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:19:13,680 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 14 states. [2018-07-23 15:19:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,698 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-23 15:19:13,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:19:13,698 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-07-23 15:19:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,699 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:19:13,699 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:19:13,700 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:19:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:19:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:19:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:19:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-23 15:19:13,706 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-23 15:19:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,707 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-23 15:19:13,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:19:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-23 15:19:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:19:13,708 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,708 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,708 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,708 INFO L82 PathProgramCache]: Analyzing trace with hash -668366197, now seen corresponding path program 12 times [2018-07-23 15:19:13,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:19:13,763 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:19:13,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:19:13,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:19:13,764 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 15 states. [2018-07-23 15:19:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,782 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-07-23 15:19:13,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:19:13,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-07-23 15:19:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,784 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:19:13,784 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:19:13,785 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:19:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:19:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:19:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:19:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-23 15:19:13,799 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-23 15:19:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,799 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-23 15:19:13,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:19:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-23 15:19:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:19:13,802 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,802 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,802 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1861620871, now seen corresponding path program 13 times [2018-07-23 15:19:13,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:19:13,876 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:19:13,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:19:13,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:19:13,877 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2018-07-23 15:19:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,903 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-07-23 15:19:13,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:19:13,904 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-07-23 15:19:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,908 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:19:13,908 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:19:13,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:19:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:19:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:19:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:19:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-23 15:19:13,923 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-23 15:19:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,923 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-23 15:19:13,923 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:19:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-23 15:19:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:19:13,924 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,924 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-23 15:19:13,925 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2067263613, now seen corresponding path program 14 times [2018-07-23 15:19:13,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:13,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:13,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:19:13,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:19:13,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:19:13,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:19:13,994 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 17 states. [2018-07-23 15:19:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,017 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-23 15:19:14,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:19:14,017 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-07-23 15:19:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,018 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:19:14,018 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:19:14,019 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:19:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:19:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:19:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:19:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-23 15:19:14,031 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-23 15:19:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,031 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-23 15:19:14,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:19:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-23 15:19:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:19:14,032 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,032 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,033 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1845967743, now seen corresponding path program 15 times [2018-07-23 15:19:14,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:19:14,109 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:19:14,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:19:14,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:19:14,110 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 18 states. [2018-07-23 15:19:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,137 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-23 15:19:14,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:19:14,138 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2018-07-23 15:19:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,139 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:19:14,139 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:19:14,143 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:19:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:19:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:19:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:19:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-23 15:19:14,152 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-23 15:19:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,153 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-23 15:19:14,154 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:19:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-23 15:19:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:19:14,155 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,155 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,155 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash 69949563, now seen corresponding path program 16 times [2018-07-23 15:19:14,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:19:14,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:19:14,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:19:14,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:19:14,231 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 19 states. [2018-07-23 15:19:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,248 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-07-23 15:19:14,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:19:14,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2018-07-23 15:19:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,249 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:19:14,249 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:19:14,250 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:19:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:19:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:19:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:19:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-23 15:19:14,255 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-23 15:19:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,255 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-23 15:19:14,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:19:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-23 15:19:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:19:14,257 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,257 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,257 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1581504905, now seen corresponding path program 17 times [2018-07-23 15:19:14,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:19:14,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:19:14,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:19:14,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:19:14,349 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2018-07-23 15:19:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,372 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-23 15:19:14,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:19:14,372 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2018-07-23 15:19:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,373 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:19:14,374 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:19:14,377 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:19:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:19:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:19:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:19:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-23 15:19:14,389 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-23 15:19:14,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,389 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-23 15:19:14,390 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:19:14,390 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-23 15:19:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:19:14,391 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,391 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,391 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash 508650867, now seen corresponding path program 18 times [2018-07-23 15:19:14,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:19:14,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:19:14,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:19:14,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:19:14,489 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 21 states. [2018-07-23 15:19:14,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,515 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-07-23 15:19:14,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:19:14,515 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-07-23 15:19:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,516 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:19:14,516 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:19:14,520 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:19:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:19:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:19:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:19:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-23 15:19:14,529 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-23 15:19:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,529 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-23 15:19:14,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:19:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-23 15:19:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:19:14,530 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,533 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,533 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,534 INFO L82 PathProgramCache]: Analyzing trace with hash -896346769, now seen corresponding path program 19 times [2018-07-23 15:19:14,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:19:14,631 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:19:14,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:19:14,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:19:14,632 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 22 states. [2018-07-23 15:19:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,659 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-23 15:19:14,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:19:14,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2018-07-23 15:19:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,660 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:19:14,660 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:19:14,661 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:19:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:19:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:19:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:19:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-23 15:19:14,671 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-23 15:19:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,671 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-23 15:19:14,671 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:19:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-23 15:19:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:19:14,672 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,672 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,673 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1815623275, now seen corresponding path program 20 times [2018-07-23 15:19:14,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,773 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:19:14,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:19:14,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:19:14,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:19:14,776 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 23 states. [2018-07-23 15:19:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,804 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-23 15:19:14,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:19:14,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2018-07-23 15:19:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,805 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:19:14,805 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:19:14,806 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:19:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:19:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:19:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:19:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-23 15:19:14,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-23 15:19:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,814 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-23 15:19:14,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:19:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-23 15:19:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:19:14,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,815 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,815 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,816 INFO L82 PathProgramCache]: Analyzing trace with hash 973686887, now seen corresponding path program 21 times [2018-07-23 15:19:14,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:19:14,919 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:19:14,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:19:14,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:19:14,920 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 24 states. [2018-07-23 15:19:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:14,938 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-07-23 15:19:14,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:19:14,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2018-07-23 15:19:14,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:14,939 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:19:14,939 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:19:14,940 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:19:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:19:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:19:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:19:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-23 15:19:14,945 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-23 15:19:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,946 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-23 15:19:14,946 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:19:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-23 15:19:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:19:14,946 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,947 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,947 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash -673330333, now seen corresponding path program 22 times [2018-07-23 15:19:14,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:19:15,063 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:19:15,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:19:15,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:19:15,064 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 25 states. [2018-07-23 15:19:15,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,085 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-23 15:19:15,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:19:15,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-07-23 15:19:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,087 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:19:15,087 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:19:15,088 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:19:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:19:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:19:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:19:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-23 15:19:15,092 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-23 15:19:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,092 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-23 15:19:15,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:19:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-23 15:19:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:19:15,093 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,093 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,093 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1386053471, now seen corresponding path program 23 times [2018-07-23 15:19:15,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:19:15,208 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:19:15,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:19:15,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:19:15,209 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 26 states. [2018-07-23 15:19:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,228 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-23 15:19:15,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:19:15,229 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 52 [2018-07-23 15:19:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,229 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:19:15,230 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:19:15,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:19:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:19:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:19:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:19:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-23 15:19:15,239 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-23 15:19:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,240 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-23 15:19:15,240 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:19:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-23 15:19:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:19:15,244 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,244 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,244 INFO L414 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash 473965659, now seen corresponding path program 24 times [2018-07-23 15:19:15,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:19:15,369 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:19:15,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:19:15,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:19:15,371 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 27 states. [2018-07-23 15:19:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,388 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-07-23 15:19:15,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:19:15,388 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2018-07-23 15:19:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,389 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:19:15,389 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:19:15,390 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:19:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:19:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:19:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:19:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-23 15:19:15,395 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-23 15:19:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,396 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-23 15:19:15,396 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:19:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-23 15:19:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:19:15,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,398 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,399 INFO L414 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,399 INFO L82 PathProgramCache]: Analyzing trace with hash 130906711, now seen corresponding path program 25 times [2018-07-23 15:19:15,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:19:15,528 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:19:15,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:19:15,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:19:15,529 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 28 states. [2018-07-23 15:19:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,551 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-07-23 15:19:15,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:19:15,551 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2018-07-23 15:19:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,552 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:19:15,552 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:19:15,553 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:19:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:19:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:19:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:19:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-23 15:19:15,556 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-23 15:19:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,556 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-23 15:19:15,557 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:19:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-23 15:19:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:19:15,557 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,558 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,558 INFO L414 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1163739475, now seen corresponding path program 26 times [2018-07-23 15:19:15,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:19:15,706 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:19:15,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:19:15,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:19:15,707 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 29 states. [2018-07-23 15:19:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,736 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-23 15:19:15,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:19:15,737 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-07-23 15:19:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,737 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:19:15,737 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:19:15,738 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:19:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:19:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:19:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:19:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-23 15:19:15,743 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-23 15:19:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,744 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-23 15:19:15,744 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:19:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-23 15:19:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:19:15,745 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,745 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,745 INFO L414 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1578580303, now seen corresponding path program 27 times [2018-07-23 15:19:15,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:15,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:15,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:19:15,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:19:15,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:19:15,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:19:15,889 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 30 states. [2018-07-23 15:19:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:15,920 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-23 15:19:15,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:19:15,920 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 60 [2018-07-23 15:19:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:15,921 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:19:15,921 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:19:15,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:19:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:19:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:19:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:19:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-23 15:19:15,925 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-23 15:19:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:15,926 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-23 15:19:15,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:19:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-23 15:19:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:19:15,927 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:15,927 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-23 15:19:15,927 INFO L414 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:15,927 INFO L82 PathProgramCache]: Analyzing trace with hash 808657483, now seen corresponding path program 28 times [2018-07-23 15:19:15,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:16,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:16,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:19:16,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:19:16,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:19:16,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:19:16,149 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 31 states. [2018-07-23 15:19:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,174 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2018-07-23 15:19:16,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:19:16,175 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2018-07-23 15:19:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,176 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:19:16,176 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:19:16,177 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:19:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:19:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:19:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:19:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-23 15:19:16,181 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-23 15:19:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,182 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-23 15:19:16,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:19:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-23 15:19:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:19:16,182 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,182 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-23 15:19:16,183 INFO L414 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash -352797625, now seen corresponding path program 29 times [2018-07-23 15:19:16,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:16,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:16,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:19:16,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:19:16,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:19:16,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:19:16,322 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 32 states. [2018-07-23 15:19:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,340 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-07-23 15:19:16,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:19:16,340 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2018-07-23 15:19:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,341 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:19:16,341 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:19:16,342 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:19:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:19:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:19:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:19:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-23 15:19:16,345 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-23 15:19:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,345 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-23 15:19:16,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:19:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-23 15:19:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:19:16,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,346 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-23 15:19:16,346 INFO L414 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash 180340547, now seen corresponding path program 30 times [2018-07-23 15:19:16,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:16,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:16,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:19:16,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:19:16,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:19:16,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:19:16,490 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 33 states. [2018-07-23 15:19:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,516 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2018-07-23 15:19:16,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:19:16,517 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-07-23 15:19:16,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,517 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:19:16,517 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:19:16,518 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:19:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:19:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:19:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:19:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-23 15:19:16,521 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-23 15:19:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,522 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-23 15:19:16,522 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:19:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-23 15:19:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:19:16,522 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,522 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-23 15:19:16,523 INFO L414 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1425015615, now seen corresponding path program 31 times [2018-07-23 15:19:16,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:16,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:16,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:19:16,683 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:19:16,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:19:16,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:19:16,684 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 34 states. [2018-07-23 15:19:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,713 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-23 15:19:16,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:19:16,713 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2018-07-23 15:19:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,714 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:19:16,714 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:19:16,715 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:19:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:19:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:19:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:19:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-23 15:19:16,720 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-23 15:19:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,720 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-23 15:19:16,720 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:19:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-23 15:19:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:19:16,721 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,721 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-23 15:19:16,722 INFO L414 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,722 INFO L82 PathProgramCache]: Analyzing trace with hash -738119621, now seen corresponding path program 32 times [2018-07-23 15:19:16,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:16,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:16,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:19:16,873 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:19:16,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:19:16,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:19:16,874 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 35 states. [2018-07-23 15:19:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,906 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-23 15:19:16,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:19:16,907 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 70 [2018-07-23 15:19:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,908 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:19:16,908 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:19:16,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:19:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:19:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:19:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:19:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-23 15:19:16,913 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-23 15:19:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,914 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-23 15:19:16,914 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:19:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-23 15:19:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:19:16,915 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,915 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-23 15:19:16,915 INFO L414 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,919 INFO L82 PathProgramCache]: Analyzing trace with hash -746910153, now seen corresponding path program 33 times [2018-07-23 15:19:16,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:17,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:17,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:19:17,073 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:19:17,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:19:17,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:19:17,075 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 36 states. [2018-07-23 15:19:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:17,096 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2018-07-23 15:19:17,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:19:17,097 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 72 [2018-07-23 15:19:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:17,098 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:19:17,098 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:19:17,099 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:19:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:19:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:19:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:19:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-23 15:19:17,102 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-23 15:19:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:17,102 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-23 15:19:17,102 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:19:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-23 15:19:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:19:17,103 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:17,103 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-23 15:19:17,103 INFO L414 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:17,104 INFO L82 PathProgramCache]: Analyzing trace with hash -604676813, now seen corresponding path program 34 times [2018-07-23 15:19:17,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:17,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:17,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:19:17,257 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:19:17,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:19:17,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:19:17,258 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 37 states. [2018-07-23 15:19:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:17,290 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-07-23 15:19:17,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:19:17,290 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-07-23 15:19:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:17,291 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:19:17,291 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:19:17,292 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:19:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:19:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:19:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:19:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-23 15:19:17,295 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-23 15:19:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:17,296 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-23 15:19:17,296 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:19:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-23 15:19:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:19:17,297 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:17,297 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-23 15:19:17,297 INFO L414 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1357390545, now seen corresponding path program 35 times [2018-07-23 15:19:17,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:17,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:17,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:19:17,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:19:17,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:19:17,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:19:17,458 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 38 states. [2018-07-23 15:19:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:17,480 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-23 15:19:17,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:19:17,480 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 76 [2018-07-23 15:19:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:17,481 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:19:17,481 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:19:17,482 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:19:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:19:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:19:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:19:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-23 15:19:17,485 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-23 15:19:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:17,485 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-23 15:19:17,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:19:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-23 15:19:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:19:17,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:17,486 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-23 15:19:17,487 INFO L414 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:17,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1134186027, now seen corresponding path program 36 times [2018-07-23 15:19:17,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:17,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:17,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:19:17,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:19:17,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:19:17,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:19:17,649 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 39 states. [2018-07-23 15:19:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:17,680 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2018-07-23 15:19:17,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:19:17,680 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 78 [2018-07-23 15:19:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:17,681 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:19:17,681 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:19:17,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:19:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:19:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:19:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:19:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-23 15:19:17,686 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-23 15:19:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:17,686 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-23 15:19:17,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:19:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-23 15:19:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:19:17,688 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:17,689 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-23 15:19:17,689 INFO L414 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1052479449, now seen corresponding path program 37 times [2018-07-23 15:19:17,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:17,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:17,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:19:17,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:19:17,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:19:17,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:19:17,856 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 40 states. [2018-07-23 15:19:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:17,888 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-23 15:19:17,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:19:17,889 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 80 [2018-07-23 15:19:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:17,889 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:19:17,890 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:19:17,891 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:19:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:19:17,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:19:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:19:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-23 15:19:17,896 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-23 15:19:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:17,896 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-23 15:19:17,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:19:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-23 15:19:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:19:17,897 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:17,897 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-23 15:19:17,897 INFO L414 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2095973155, now seen corresponding path program 38 times [2018-07-23 15:19:17,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:18,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:18,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:19:18,069 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:19:18,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:19:18,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:19:18,070 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 41 states. [2018-07-23 15:19:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:18,107 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-23 15:19:18,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:19:18,108 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 82 [2018-07-23 15:19:18,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:18,108 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:19:18,109 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:19:18,110 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:19:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:19:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:19:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:19:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-23 15:19:18,114 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-23 15:19:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:18,115 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-23 15:19:18,115 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:19:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-23 15:19:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:19:18,116 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:18,116 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-23 15:19:18,116 INFO L414 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash -193018081, now seen corresponding path program 39 times [2018-07-23 15:19:18,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:18,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:18,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:19:18,317 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:19:18,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:19:18,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:19:18,318 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 42 states. [2018-07-23 15:19:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:18,356 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-23 15:19:18,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:19:18,356 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 84 [2018-07-23 15:19:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:18,357 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:19:18,357 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:19:18,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:19:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:19:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:19:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:19:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-23 15:19:18,362 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-23 15:19:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:18,363 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-23 15:19:18,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:19:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-23 15:19:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:19:18,364 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:18,364 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-23 15:19:18,364 INFO L414 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:18,365 INFO L82 PathProgramCache]: Analyzing trace with hash -890340325, now seen corresponding path program 40 times [2018-07-23 15:19:18,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:18,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:18,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:19:18,585 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:19:18,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:19:18,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:19:18,587 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 43 states. [2018-07-23 15:19:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:18,626 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2018-07-23 15:19:18,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:19:18,627 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 86 [2018-07-23 15:19:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:18,627 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:19:18,628 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:19:18,629 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:19:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:19:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:19:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:19:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-23 15:19:18,632 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-23 15:19:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:18,633 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-23 15:19:18,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:19:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-23 15:19:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:19:18,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:18,634 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-23 15:19:18,634 INFO L414 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:18,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1002118633, now seen corresponding path program 41 times [2018-07-23 15:19:18,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:18,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:18,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:19:18,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:19:18,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:19:18,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:19:18,808 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 44 states. [2018-07-23 15:19:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:18,835 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-07-23 15:19:18,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:19:18,836 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 88 [2018-07-23 15:19:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:18,836 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:19:18,837 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:19:18,838 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:19:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:19:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:19:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:19:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-23 15:19:18,842 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-23 15:19:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:18,842 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-23 15:19:18,842 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:19:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-23 15:19:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:19:18,843 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:18,844 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-23 15:19:18,844 INFO L414 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:18,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1046890221, now seen corresponding path program 42 times [2018-07-23 15:19:18,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:19,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:19,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:19:19,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:19:19,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:19:19,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:19:19,025 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 45 states. [2018-07-23 15:19:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:19,067 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2018-07-23 15:19:19,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:19:19,067 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 90 [2018-07-23 15:19:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:19,068 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:19:19,068 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:19:19,069 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:19:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:19:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:19:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:19:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-23 15:19:19,075 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-23 15:19:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:19,075 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-23 15:19:19,075 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:19:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-23 15:19:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:19:19,076 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:19,077 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-23 15:19:19,077 INFO L414 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1122713329, now seen corresponding path program 43 times [2018-07-23 15:19:19,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:19,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:19,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:19:19,260 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:19:19,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:19:19,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:19:19,263 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 46 states. [2018-07-23 15:19:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:19,298 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-23 15:19:19,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:19:19,299 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 92 [2018-07-23 15:19:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:19,300 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:19:19,300 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:19:19,301 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:19:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:19:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:19:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:19:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-23 15:19:19,306 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-23 15:19:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:19,306 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-23 15:19:19,306 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:19:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-23 15:19:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:19:19,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:19,307 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-23 15:19:19,307 INFO L414 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:19,307 INFO L82 PathProgramCache]: Analyzing trace with hash -974276085, now seen corresponding path program 44 times [2018-07-23 15:19:19,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:19,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:19,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:19:19,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:19:19,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:19:19,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:19:19,504 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 47 states. [2018-07-23 15:19:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:19,536 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-23 15:19:19,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:19:19,537 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 94 [2018-07-23 15:19:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:19,538 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:19:19,538 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:19:19,538 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:19:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:19:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:19:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:19:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-23 15:19:19,542 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-23 15:19:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:19,542 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-23 15:19:19,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:19:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-23 15:19:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:19:19,543 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:19,544 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-23 15:19:19,544 INFO L414 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:19,544 INFO L82 PathProgramCache]: Analyzing trace with hash -60005369, now seen corresponding path program 45 times [2018-07-23 15:19:19,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:19,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:19,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:19:19,744 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:19:19,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:19:19,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:19:19,745 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 48 states. [2018-07-23 15:19:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:19,774 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-07-23 15:19:19,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:19:19,774 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 96 [2018-07-23 15:19:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:19,775 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:19:19,775 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:19:19,776 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:19:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:19:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:19:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:19:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-23 15:19:19,779 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-23 15:19:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:19,780 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-23 15:19:19,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:19:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-23 15:19:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:19:19,781 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:19,781 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-23 15:19:19,781 INFO L414 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1914142973, now seen corresponding path program 46 times [2018-07-23 15:19:19,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:19,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:19,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:19:19,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:19:19,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:19:19,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:19:19,989 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 49 states. [2018-07-23 15:19:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:20,021 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2018-07-23 15:19:20,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:19:20,021 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 98 [2018-07-23 15:19:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:20,022 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:19:20,022 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:19:20,023 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:19:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:19:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:19:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:19:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-23 15:19:20,028 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-23 15:19:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:20,028 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-23 15:19:20,028 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:19:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-23 15:19:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:19:20,029 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:20,029 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-23 15:19:20,029 INFO L414 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:20,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1328952577, now seen corresponding path program 47 times [2018-07-23 15:19:20,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:20,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:20,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:19:20,240 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:19:20,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:19:20,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:19:20,241 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 50 states. [2018-07-23 15:19:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:20,280 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-23 15:19:20,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:19:20,281 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 100 [2018-07-23 15:19:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:20,282 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:19:20,282 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:19:20,284 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:19:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:19:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:19:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:19:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-23 15:19:20,289 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-23 15:19:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:20,289 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-23 15:19:20,289 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:19:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-23 15:19:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:19:20,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:20,290 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-23 15:19:20,290 INFO L414 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:20,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1601697797, now seen corresponding path program 48 times [2018-07-23 15:19:20,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:20,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:20,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:19:20,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:19:20,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:19:20,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:19:20,516 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 51 states. [2018-07-23 15:19:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:20,572 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2018-07-23 15:19:20,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:19:20,573 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 102 [2018-07-23 15:19:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:20,574 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:19:20,574 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:19:20,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:19:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:19:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:19:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:19:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-23 15:19:20,580 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-23 15:19:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:20,581 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-23 15:19:20,581 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:19:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-23 15:19:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:19:20,582 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:20,583 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-23 15:19:20,583 INFO L414 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1716849161, now seen corresponding path program 49 times [2018-07-23 15:19:20,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:20,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:20,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:19:20,845 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:19:20,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:19:20,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:19:20,847 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 52 states. [2018-07-23 15:19:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:20,883 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2018-07-23 15:19:20,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:19:20,883 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 104 [2018-07-23 15:19:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:20,884 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:19:20,885 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:19:20,886 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:19:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:19:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:19:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:19:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-23 15:19:20,890 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-23 15:19:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:20,891 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-23 15:19:20,891 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:19:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-23 15:19:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:19:20,892 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:20,892 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-23 15:19:20,892 INFO L414 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:20,893 INFO L82 PathProgramCache]: Analyzing trace with hash -708160269, now seen corresponding path program 50 times [2018-07-23 15:19:20,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:21,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:19:21,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:19:21,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:19:21,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:19:21,150 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 53 states. [2018-07-23 15:19:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:21,187 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-23 15:19:21,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:19:21,187 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 106 [2018-07-23 15:19:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:21,188 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:19:21,188 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:19:21,189 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:19:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:19:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:19:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:19:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-23 15:19:21,200 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-23 15:19:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:21,201 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-23 15:19:21,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:19:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-23 15:19:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:19:21,204 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:21,204 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-23 15:19:21,204 INFO L414 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2020743953, now seen corresponding path program 51 times [2018-07-23 15:19:21,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:21,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:19:21,426 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:19:21,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:19:21,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:19:21,427 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 54 states. [2018-07-23 15:19:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:21,477 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-23 15:19:21,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:19:21,477 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 108 [2018-07-23 15:19:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:21,478 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:19:21,478 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:19:21,479 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:19:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:19:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:19:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:19:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-23 15:19:21,484 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-23 15:19:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:21,484 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-23 15:19:21,484 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:19:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-23 15:19:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:19:21,485 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:21,485 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-23 15:19:21,485 INFO L414 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:21,486 INFO L82 PathProgramCache]: Analyzing trace with hash -693279253, now seen corresponding path program 52 times [2018-07-23 15:19:21,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:21,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:19:21,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:19:21,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:19:21,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:19:21,700 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 55 states. [2018-07-23 15:19:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:21,751 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-23 15:19:21,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:19:21,751 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 110 [2018-07-23 15:19:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:21,752 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:19:21,752 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:19:21,753 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:19:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:19:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:19:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:19:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-23 15:19:21,761 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-23 15:19:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:21,761 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-23 15:19:21,761 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:19:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-23 15:19:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:19:21,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:21,763 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-23 15:19:21,763 INFO L414 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:21,763 INFO L82 PathProgramCache]: Analyzing trace with hash -604989465, now seen corresponding path program 53 times [2018-07-23 15:19:21,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:21,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:19:21,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:19:21,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:19:21,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:19:21,979 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 56 states. [2018-07-23 15:19:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:22,046 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2018-07-23 15:19:22,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:19:22,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 112 [2018-07-23 15:19:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:22,047 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:19:22,047 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:19:22,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:19:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:19:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:19:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:19:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-23 15:19:22,053 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-23 15:19:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:22,053 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-23 15:19:22,054 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:19:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-23 15:19:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:19:22,055 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:22,055 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-23 15:19:22,055 INFO L414 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1657849117, now seen corresponding path program 54 times [2018-07-23 15:19:22,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:22,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:22,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:19:22,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:19:22,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:19:22,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:19:22,284 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 57 states. [2018-07-23 15:19:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:22,350 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2018-07-23 15:19:22,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:19:22,350 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 114 [2018-07-23 15:19:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:22,351 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:19:22,351 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:19:22,353 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:19:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:19:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:19:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:19:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-23 15:19:22,357 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-23 15:19:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:22,357 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-23 15:19:22,357 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:19:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-23 15:19:22,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:19:22,358 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:22,359 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-23 15:19:22,359 INFO L414 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 156307167, now seen corresponding path program 55 times [2018-07-23 15:19:22,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:22,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:22,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:19:22,599 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:19:22,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:19:22,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:19:22,604 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 58 states. [2018-07-23 15:19:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:22,644 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-23 15:19:22,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:19:22,644 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 116 [2018-07-23 15:19:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:22,645 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:19:22,645 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:19:22,647 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:19:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:19:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:19:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:19:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-23 15:19:22,651 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-23 15:19:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:22,651 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-23 15:19:22,651 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:19:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-23 15:19:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:19:22,652 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:22,653 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-23 15:19:22,653 INFO L414 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash -196226085, now seen corresponding path program 56 times [2018-07-23 15:19:22,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:22,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:22,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:19:22,895 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:19:22,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:19:22,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:19:22,900 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 59 states. [2018-07-23 15:19:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:22,964 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-23 15:19:22,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:19:22,964 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 118 [2018-07-23 15:19:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:22,965 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:19:22,965 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:19:22,966 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:19:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:19:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:19:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:19:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-23 15:19:22,971 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-23 15:19:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:22,972 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-23 15:19:22,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:19:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-23 15:19:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:19:22,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:22,973 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-23 15:19:22,973 INFO L414 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 321735127, now seen corresponding path program 57 times [2018-07-23 15:19:22,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:23,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:23,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:19:23,266 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:19:23,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:19:23,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:19:23,268 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 60 states. [2018-07-23 15:19:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:23,336 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-23 15:19:23,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:19:23,336 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 120 [2018-07-23 15:19:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:23,337 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:19:23,337 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:19:23,339 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:19:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:19:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:19:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:19:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-23 15:19:23,344 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-23 15:19:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:23,345 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-23 15:19:23,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:19:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-23 15:19:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:19:23,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:23,347 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-23 15:19:23,347 INFO L414 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash -133746477, now seen corresponding path program 58 times [2018-07-23 15:19:23,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:23,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:23,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:19:23,713 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:19:23,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:19:23,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:19:23,714 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 61 states. [2018-07-23 15:19:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:23,762 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2018-07-23 15:19:23,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:19:23,762 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 122 [2018-07-23 15:19:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:23,763 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:19:23,764 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:19:23,765 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:19:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:19:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:19:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:19:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-23 15:19:23,770 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-23 15:19:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:23,770 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-23 15:19:23,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:19:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-23 15:19:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:19:23,772 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:23,772 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-23 15:19:23,772 INFO L414 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash 235096271, now seen corresponding path program 59 times [2018-07-23 15:19:23,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:24,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:24,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:19:24,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:19:24,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:19:24,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:19:24,024 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 62 states. [2018-07-23 15:19:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:24,100 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-23 15:19:24,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:19:24,100 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 124 [2018-07-23 15:19:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:24,101 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:19:24,101 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:19:24,102 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:19:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:19:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:19:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:19:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-23 15:19:24,107 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-23 15:19:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:24,107 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-23 15:19:24,107 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:19:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-23 15:19:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:19:24,109 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:24,109 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-23 15:19:24,109 INFO L414 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:24,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1789308469, now seen corresponding path program 60 times [2018-07-23 15:19:24,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:24,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:24,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:19:24,352 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:19:24,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:19:24,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:19:24,354 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 63 states. [2018-07-23 15:19:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:24,404 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2018-07-23 15:19:24,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:19:24,404 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 126 [2018-07-23 15:19:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:24,405 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:19:24,406 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:19:24,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:19:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:19:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:19:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:19:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-23 15:19:24,412 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-23 15:19:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:24,413 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-23 15:19:24,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:19:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-23 15:19:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:19:24,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:24,414 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-23 15:19:24,414 INFO L414 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1622078521, now seen corresponding path program 61 times [2018-07-23 15:19:24,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:24,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:24,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:19:24,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:19:24,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:19:24,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:19:24,665 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 64 states. [2018-07-23 15:19:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:24,731 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2018-07-23 15:19:24,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:19:24,732 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 128 [2018-07-23 15:19:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:24,733 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:19:24,733 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:19:24,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:19:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:19:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:19:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:19:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-23 15:19:24,739 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-23 15:19:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:24,739 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-23 15:19:24,739 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:19:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-23 15:19:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:19:24,741 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:24,741 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-23 15:19:24,741 INFO L414 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:24,741 INFO L82 PathProgramCache]: Analyzing trace with hash 172111555, now seen corresponding path program 62 times [2018-07-23 15:19:24,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:24,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:24,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:19:24,994 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:19:24,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:19:24,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:19:24,996 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 65 states. [2018-07-23 15:19:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:25,057 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-23 15:19:25,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:19:25,057 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 130 [2018-07-23 15:19:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:25,058 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:19:25,058 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:19:25,060 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:19:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:19:25,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:19:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:19:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-23 15:19:25,065 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-23 15:19:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:25,065 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-23 15:19:25,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:19:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-23 15:19:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:19:25,066 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:25,066 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-23 15:19:25,067 INFO L414 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2106888895, now seen corresponding path program 63 times [2018-07-23 15:19:25,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:25,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:25,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:19:25,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:19:25,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:19:25,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:19:25,331 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 66 states. [2018-07-23 15:19:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:25,391 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-23 15:19:25,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:19:25,391 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 132 [2018-07-23 15:19:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:25,392 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:19:25,392 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:19:25,397 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:19:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:19:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:19:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:19:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-23 15:19:25,404 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-23 15:19:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:25,405 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-23 15:19:25,405 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:19:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-23 15:19:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:19:25,406 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:25,407 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-23 15:19:25,407 INFO L414 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1707073467, now seen corresponding path program 64 times [2018-07-23 15:19:25,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:25,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:25,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:19:25,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:19:25,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:19:25,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:19:25,673 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 67 states. [2018-07-23 15:19:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:25,750 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2018-07-23 15:19:25,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:19:25,750 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 134 [2018-07-23 15:19:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:25,751 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:19:25,751 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:19:25,752 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:19:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:19:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:19:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:19:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-23 15:19:25,758 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-23 15:19:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:25,758 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-23 15:19:25,758 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:19:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-23 15:19:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:19:25,760 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:25,760 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-23 15:19:25,760 INFO L414 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:25,760 INFO L82 PathProgramCache]: Analyzing trace with hash -263463497, now seen corresponding path program 65 times [2018-07-23 15:19:25,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:26,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:26,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:19:26,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:19:26,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:19:26,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:19:26,066 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 68 states. [2018-07-23 15:19:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:26,145 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions. [2018-07-23 15:19:26,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:19:26,145 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 136 [2018-07-23 15:19:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:26,146 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:19:26,147 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:19:26,147 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:19:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:19:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:19:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:19:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-23 15:19:26,154 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-23 15:19:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:26,155 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-23 15:19:26,155 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:19:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-23 15:19:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:19:26,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:26,156 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-23 15:19:26,156 INFO L414 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash 131091635, now seen corresponding path program 66 times [2018-07-23 15:19:26,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:26,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:26,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:19:26,417 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:19:26,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:19:26,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:19:26,418 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 69 states. [2018-07-23 15:19:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:26,502 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2018-07-23 15:19:26,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:19:26,502 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 138 [2018-07-23 15:19:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:26,503 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:19:26,503 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:19:26,504 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:19:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:19:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:19:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:19:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-23 15:19:26,509 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-23 15:19:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:26,510 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-23 15:19:26,510 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:19:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-23 15:19:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:19:26,511 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:26,511 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-23 15:19:26,511 INFO L414 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1341451439, now seen corresponding path program 67 times [2018-07-23 15:19:26,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:26,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:26,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:19:26,776 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:19:26,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:19:26,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:19:26,778 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 70 states. [2018-07-23 15:19:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:26,868 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-23 15:19:26,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:19:26,869 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 140 [2018-07-23 15:19:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:26,870 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:19:26,870 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:19:26,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:19:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:19:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:19:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:19:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-23 15:19:26,875 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-23 15:19:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:26,876 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-23 15:19:26,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:19:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-23 15:19:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:19:26,877 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:26,877 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-23 15:19:26,878 INFO L414 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 561085867, now seen corresponding path program 68 times [2018-07-23 15:19:26,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:27,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:27,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:19:27,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:19:27,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:19:27,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:19:27,159 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 71 states. [2018-07-23 15:19:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:27,247 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-23 15:19:27,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:19:27,247 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 142 [2018-07-23 15:19:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:27,248 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:19:27,248 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:19:27,249 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:19:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:19:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:19:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:19:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-23 15:19:27,254 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-23 15:19:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:27,255 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-23 15:19:27,255 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:19:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-23 15:19:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:19:27,256 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:27,256 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-23 15:19:27,256 INFO L414 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2045919321, now seen corresponding path program 69 times [2018-07-23 15:19:27,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:27,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:27,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:19:27,527 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:19:27,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:19:27,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:19:27,528 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 72 states. [2018-07-23 15:19:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:27,618 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2018-07-23 15:19:27,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:19:27,619 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 144 [2018-07-23 15:19:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:27,620 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:19:27,620 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:19:27,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:19:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:19:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:19:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:19:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-23 15:19:27,626 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-23 15:19:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:27,626 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-23 15:19:27,626 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:19:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-23 15:19:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:19:27,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:27,628 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-23 15:19:27,628 INFO L414 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash 882995875, now seen corresponding path program 70 times [2018-07-23 15:19:27,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:27,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:27,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:19:27,896 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:19:27,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:19:27,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:19:27,898 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 73 states. [2018-07-23 15:19:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:27,948 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2018-07-23 15:19:27,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:19:27,948 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 146 [2018-07-23 15:19:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:27,949 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:19:27,950 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:19:27,950 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:19:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:19:27,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:19:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:19:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-23 15:19:27,956 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-23 15:19:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:27,956 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-23 15:19:27,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:19:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-23 15:19:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:19:27,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:27,960 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-23 15:19:27,960 INFO L414 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1928046945, now seen corresponding path program 71 times [2018-07-23 15:19:27,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:28,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:28,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:19:28,289 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:19:28,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:19:28,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:19:28,290 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 74 states. [2018-07-23 15:19:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:28,383 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-23 15:19:28,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:19:28,383 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 148 [2018-07-23 15:19:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:28,384 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:19:28,384 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:19:28,385 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:19:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:19:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:19:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:19:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-23 15:19:28,392 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-23 15:19:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:28,392 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-23 15:19:28,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:19:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-23 15:19:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:19:28,394 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:28,394 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-23 15:19:28,395 INFO L414 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1805767781, now seen corresponding path program 72 times [2018-07-23 15:19:28,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:28,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:28,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:19:28,770 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:19:28,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:19:28,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:19:28,771 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 75 states. [2018-07-23 15:19:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:28,886 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2018-07-23 15:19:28,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:19:28,886 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 150 [2018-07-23 15:19:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:28,887 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:19:28,887 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:19:28,888 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:19:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:19:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:19:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:19:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-23 15:19:28,893 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-23 15:19:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:28,894 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-23 15:19:28,894 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:19:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-23 15:19:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:19:28,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:28,896 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-23 15:19:28,896 INFO L414 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash -259608169, now seen corresponding path program 73 times [2018-07-23 15:19:28,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:29,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:29,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:19:29,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:19:29,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:19:29,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:19:29,201 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 76 states. [2018-07-23 15:19:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:29,269 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2018-07-23 15:19:29,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:19:29,269 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 152 [2018-07-23 15:19:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:29,270 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:19:29,270 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:19:29,271 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:19:29,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:19:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:19:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:19:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-23 15:19:29,278 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-23 15:19:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:29,278 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-23 15:19:29,278 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:19:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-23 15:19:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:19:29,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:29,280 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-23 15:19:29,280 INFO L414 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:29,281 INFO L82 PathProgramCache]: Analyzing trace with hash -458905453, now seen corresponding path program 74 times [2018-07-23 15:19:29,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:29,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:29,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:19:29,596 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:19:29,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:19:29,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:19:29,598 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 77 states. [2018-07-23 15:19:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:29,732 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-23 15:19:29,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:19:29,733 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 154 [2018-07-23 15:19:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:29,734 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:19:29,734 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:19:29,735 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:19:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:19:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:19:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:19:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-23 15:19:29,740 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-23 15:19:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:29,740 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-23 15:19:29,741 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:19:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-23 15:19:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:19:29,742 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:29,742 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-23 15:19:29,742 INFO L414 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1289932943, now seen corresponding path program 75 times [2018-07-23 15:19:29,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:30,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:30,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:19:30,047 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:19:30,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:19:30,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:19:30,049 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 78 states. [2018-07-23 15:19:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:30,122 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-23 15:19:30,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:19:30,122 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 156 [2018-07-23 15:19:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:30,123 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:19:30,123 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:19:30,124 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:19:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:19:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:19:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:19:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-23 15:19:30,131 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-23 15:19:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:30,131 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-23 15:19:30,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:19:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-23 15:19:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:19:30,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:30,133 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-23 15:19:30,133 INFO L414 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1703548533, now seen corresponding path program 76 times [2018-07-23 15:19:30,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:30,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:30,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:19:30,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:19:30,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:19:30,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:19:30,438 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 79 states. [2018-07-23 15:19:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:30,533 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2018-07-23 15:19:30,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:19:30,534 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 158 [2018-07-23 15:19:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:30,535 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:19:30,535 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:19:30,536 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:19:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:19:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:19:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:19:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-23 15:19:30,542 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-23 15:19:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:30,542 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-23 15:19:30,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:19:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-23 15:19:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:19:30,544 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:30,544 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-23 15:19:30,544 INFO L414 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:30,545 INFO L82 PathProgramCache]: Analyzing trace with hash -811158649, now seen corresponding path program 77 times [2018-07-23 15:19:30,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:30,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:30,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:19:30,836 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:19:30,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:19:30,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:19:30,838 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 80 states. [2018-07-23 15:19:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:30,967 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-23 15:19:30,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:19:30,967 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 160 [2018-07-23 15:19:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:30,968 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:19:30,969 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:19:30,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:19:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:19:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:19:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:19:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-23 15:19:30,974 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-23 15:19:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:30,975 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-23 15:19:30,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:19:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-23 15:19:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:19:30,977 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:30,977 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-23 15:19:30,977 INFO L414 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2077027971, now seen corresponding path program 78 times [2018-07-23 15:19:30,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:31,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:31,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:19:31,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:19:31,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:19:31,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:19:31,303 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 81 states. [2018-07-23 15:19:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:31,421 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2018-07-23 15:19:31,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:19:31,421 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 162 [2018-07-23 15:19:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:31,423 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:19:31,423 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:19:31,423 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:19:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:19:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:19:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:19:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-23 15:19:31,428 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-23 15:19:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:31,428 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-23 15:19:31,429 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:19:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-23 15:19:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:19:31,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:31,430 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-23 15:19:31,430 INFO L414 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1219470721, now seen corresponding path program 79 times [2018-07-23 15:19:31,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:31,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:31,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:19:31,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:19:31,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:19:31,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:19:31,738 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 82 states. [2018-07-23 15:19:31,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:31,817 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-23 15:19:31,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:19:31,818 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 164 [2018-07-23 15:19:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:31,819 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:19:31,819 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:19:31,820 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:19:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:19:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:19:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:19:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-23 15:19:31,824 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-23 15:19:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:31,825 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-23 15:19:31,825 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:19:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-23 15:19:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:19:31,826 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:31,826 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-23 15:19:31,827 INFO L414 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 531150715, now seen corresponding path program 80 times [2018-07-23 15:19:31,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:32,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:32,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:19:32,135 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:19:32,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:19:32,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:19:32,137 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 83 states. [2018-07-23 15:19:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:32,211 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-23 15:19:32,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:19:32,211 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 166 [2018-07-23 15:19:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:32,213 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:19:32,213 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:19:32,213 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:19:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:19:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:19:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:19:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-23 15:19:32,218 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-23 15:19:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:32,218 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-23 15:19:32,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:19:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-23 15:19:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:19:32,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:32,220 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-23 15:19:32,220 INFO L414 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash -748829321, now seen corresponding path program 81 times [2018-07-23 15:19:32,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:32,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:32,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:19:32,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:19:32,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:19:32,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:19:32,522 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 84 states. [2018-07-23 15:19:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:32,588 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2018-07-23 15:19:32,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:19:32,588 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 168 [2018-07-23 15:19:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:32,589 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:19:32,589 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:19:32,590 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:19:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:19:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:19:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:19:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-23 15:19:32,594 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-23 15:19:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:32,595 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-23 15:19:32,595 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:19:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-23 15:19:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:19:32,596 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:32,596 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-23 15:19:32,597 INFO L414 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1845970035, now seen corresponding path program 82 times [2018-07-23 15:19:32,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:32,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:32,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:19:32,925 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:19:32,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:19:32,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:19:32,926 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 85 states. [2018-07-23 15:19:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:33,012 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-23 15:19:33,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:19:33,012 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 170 [2018-07-23 15:19:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:33,013 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:19:33,013 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:19:33,014 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:19:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:19:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:19:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:19:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-23 15:19:33,019 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-23 15:19:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:33,019 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-23 15:19:33,019 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:19:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-23 15:19:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:19:33,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:33,021 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-23 15:19:33,021 INFO L414 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:33,022 INFO L82 PathProgramCache]: Analyzing trace with hash 72152175, now seen corresponding path program 83 times [2018-07-23 15:19:33,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:33,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:33,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:19:33,390 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:19:33,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:19:33,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:19:33,392 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 86 states. [2018-07-23 15:19:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:33,509 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-23 15:19:33,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:19:33,509 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 172 [2018-07-23 15:19:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:33,511 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:19:33,511 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:19:33,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:19:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:19:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:19:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:19:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-23 15:19:33,517 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-23 15:19:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:33,517 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-23 15:19:33,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:19:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-23 15:19:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:19:33,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:33,519 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-23 15:19:33,520 INFO L414 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 535205227, now seen corresponding path program 84 times [2018-07-23 15:19:33,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:34,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:34,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:19:34,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:19:34,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:19:34,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:19:34,042 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 87 states. [2018-07-23 15:19:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:34,207 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2018-07-23 15:19:34,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:19:34,207 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 174 [2018-07-23 15:19:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:34,208 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:19:34,208 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:19:34,209 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:19:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:19:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:19:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:19:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-23 15:19:34,215 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-23 15:19:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:34,216 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-23 15:19:34,216 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:19:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-23 15:19:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:19:34,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:34,218 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-23 15:19:34,218 INFO L414 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1147410585, now seen corresponding path program 85 times [2018-07-23 15:19:34,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:34,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:34,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:19:34,582 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:19:34,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:19:34,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:19:34,584 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 88 states. [2018-07-23 15:19:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:34,746 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2018-07-23 15:19:34,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:19:34,746 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 176 [2018-07-23 15:19:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:34,748 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:19:34,748 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:19:34,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:19:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:19:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:19:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:19:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-23 15:19:34,754 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-23 15:19:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:34,755 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-23 15:19:34,755 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:19:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-23 15:19:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:19:34,757 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:34,757 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-23 15:19:34,757 INFO L414 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1061464675, now seen corresponding path program 86 times [2018-07-23 15:19:34,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:35,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:35,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:19:35,087 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:19:35,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:19:35,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:19:35,088 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 89 states. [2018-07-23 15:19:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:35,155 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-23 15:19:35,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:19:35,156 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 178 [2018-07-23 15:19:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:35,157 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:19:35,157 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:19:35,158 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:19:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:19:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:19:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:19:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-23 15:19:35,162 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-23 15:19:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:35,163 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-23 15:19:35,163 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:19:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-23 15:19:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:19:35,164 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:35,165 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-23 15:19:35,165 INFO L414 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:35,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2076745311, now seen corresponding path program 87 times [2018-07-23 15:19:35,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:35,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:35,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:19:35,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:19:35,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:19:35,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:19:35,522 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 90 states. [2018-07-23 15:19:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:35,659 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-23 15:19:35,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:19:35,660 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 180 [2018-07-23 15:19:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:35,661 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:19:35,661 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:19:35,662 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:19:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:19:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:19:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:19:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-23 15:19:35,668 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-23 15:19:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:35,668 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-23 15:19:35,668 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:19:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-23 15:19:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:19:35,670 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:35,670 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-23 15:19:35,670 INFO L414 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1491106981, now seen corresponding path program 88 times [2018-07-23 15:19:35,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:36,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:36,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:19:36,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:19:36,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:19:36,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:19:36,005 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 91 states. [2018-07-23 15:19:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:36,069 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2018-07-23 15:19:36,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:19:36,070 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 182 [2018-07-23 15:19:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:36,071 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:19:36,071 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:19:36,072 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:19:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:19:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:19:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:19:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-23 15:19:36,077 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-23 15:19:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:36,077 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-23 15:19:36,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:19:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-23 15:19:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:19:36,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:36,078 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-23 15:19:36,079 INFO L414 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1481709911, now seen corresponding path program 89 times [2018-07-23 15:19:36,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:36,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:36,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:19:36,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:19:36,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:19:36,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:19:36,452 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 92 states. [2018-07-23 15:19:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:36,587 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2018-07-23 15:19:36,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:19:36,587 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 184 [2018-07-23 15:19:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:36,589 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:19:36,589 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:19:36,589 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:19:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:19:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:19:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:19:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-23 15:19:36,594 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-23 15:19:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:36,595 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-23 15:19:36,595 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:19:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-23 15:19:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:19:36,596 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:36,596 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-23 15:19:36,596 INFO L414 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2089476013, now seen corresponding path program 90 times [2018-07-23 15:19:36,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:37,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:37,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:19:37,007 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:19:37,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:19:37,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:19:37,008 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 93 states. [2018-07-23 15:19:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:37,131 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2018-07-23 15:19:37,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:19:37,131 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 186 [2018-07-23 15:19:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:37,133 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:19:37,133 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:19:37,133 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:19:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:19:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:19:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:19:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-23 15:19:37,138 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-23 15:19:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:37,139 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-23 15:19:37,139 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:19:37,139 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-23 15:19:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:19:37,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:37,140 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-23 15:19:37,140 INFO L414 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1974687823, now seen corresponding path program 91 times [2018-07-23 15:19:37,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:37,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:37,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:19:37,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:19:37,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:19:37,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:19:37,440 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 94 states. [2018-07-23 15:19:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:37,505 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-23 15:19:37,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:19:37,505 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 188 [2018-07-23 15:19:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:37,506 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:19:37,506 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:19:37,506 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:19:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:19:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:19:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:19:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-23 15:19:37,511 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-23 15:19:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:37,511 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-23 15:19:37,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:19:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-23 15:19:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:19:37,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:37,512 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-23 15:19:37,512 INFO L414 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:37,512 INFO L82 PathProgramCache]: Analyzing trace with hash -784105141, now seen corresponding path program 92 times [2018-07-23 15:19:37,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:37,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:37,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:19:37,775 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:19:37,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:19:37,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:19:37,776 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 95 states. [2018-07-23 15:19:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:37,920 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-23 15:19:37,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:19:37,921 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 190 [2018-07-23 15:19:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:37,921 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:19:37,922 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:19:37,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:19:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:19:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:19:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:19:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-23 15:19:37,927 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-23 15:19:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:37,927 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-23 15:19:37,927 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:19:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-23 15:19:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:19:37,928 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:37,928 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-23 15:19:37,928 INFO L414 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:37,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1989321913, now seen corresponding path program 93 times [2018-07-23 15:19:37,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:38,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:38,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:19:38,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:19:38,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:19:38,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:19:38,363 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 96 states. [2018-07-23 15:19:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:38,543 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions. [2018-07-23 15:19:38,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:19:38,543 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 192 [2018-07-23 15:19:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:38,544 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:19:38,544 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:19:38,545 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:19:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:19:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:19:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:19:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-23 15:19:38,549 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-23 15:19:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:38,549 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-23 15:19:38,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:19:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-23 15:19:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:19:38,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:38,550 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-23 15:19:38,550 INFO L414 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash -561469885, now seen corresponding path program 94 times [2018-07-23 15:19:38,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:38,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:38,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:19:38,832 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:19:38,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:19:38,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:19:38,833 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 97 states. [2018-07-23 15:19:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:38,957 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2018-07-23 15:19:38,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:19:38,958 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 194 [2018-07-23 15:19:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:38,958 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:19:38,959 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:19:38,959 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:19:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:19:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:19:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:19:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-23 15:19:38,963 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-23 15:19:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:38,963 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-23 15:19:38,963 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:19:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-23 15:19:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:19:38,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:38,964 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-23 15:19:38,965 INFO L414 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1509761599, now seen corresponding path program 95 times [2018-07-23 15:19:38,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:39,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:39,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:19:39,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:19:39,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:19:39,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:19:39,364 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 98 states. [2018-07-23 15:19:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:39,505 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-23 15:19:39,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:19:39,505 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 196 [2018-07-23 15:19:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:39,506 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:19:39,506 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:19:39,507 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:19:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:19:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:19:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:19:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-23 15:19:39,511 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-23 15:19:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:39,511 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-23 15:19:39,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:19:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-23 15:19:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:19:39,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:39,512 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-23 15:19:39,512 INFO L414 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash -901607621, now seen corresponding path program 96 times [2018-07-23 15:19:39,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:39,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:39,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:19:39,770 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:19:39,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:19:39,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:19:39,771 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 99 states. [2018-07-23 15:19:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:39,931 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2018-07-23 15:19:39,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:19:39,931 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 198 [2018-07-23 15:19:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:39,932 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:19:39,932 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:19:39,933 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:19:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:19:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:19:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:19:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-23 15:19:39,936 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-23 15:19:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:39,936 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-23 15:19:39,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:19:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-23 15:19:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:19:39,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:39,937 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-23 15:19:39,938 INFO L414 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1054911799, now seen corresponding path program 97 times [2018-07-23 15:19:39,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:40,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:40,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:19:40,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:19:40,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:19:40,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:19:40,223 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 100 states. [2018-07-23 15:19:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:40,399 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-23 15:19:40,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:19:40,399 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 200 [2018-07-23 15:19:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:40,400 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:19:40,400 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:19:40,400 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:19:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:19:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:19:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:19:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-23 15:19:40,405 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-23 15:19:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:40,405 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-23 15:19:40,405 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:19:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-23 15:19:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:19:40,406 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:40,407 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-23 15:19:40,407 INFO L414 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:40,407 INFO L82 PathProgramCache]: Analyzing trace with hash 74398771, now seen corresponding path program 98 times [2018-07-23 15:19:40,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:40,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:40,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:19:40,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:19:40,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:19:40,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:19:40,736 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 101 states. [2018-07-23 15:19:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:40,863 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-23 15:19:40,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:19:40,863 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 202 [2018-07-23 15:19:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:40,864 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:19:40,864 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:19:40,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:19:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:19:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:19:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:19:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-23 15:19:40,868 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-23 15:19:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:40,869 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-23 15:19:40,869 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:19:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-23 15:19:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:19:40,870 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:40,870 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-23 15:19:40,870 INFO L414 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:40,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1600783313, now seen corresponding path program 99 times [2018-07-23 15:19:40,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:41,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:41,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:19:41,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:19:41,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:19:41,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:19:41,192 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 102 states. [2018-07-23 15:19:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:41,252 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-23 15:19:41,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:19:41,252 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 204 [2018-07-23 15:19:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:41,253 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:19:41,253 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:19:41,254 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:19:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:19:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:19:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:19:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-23 15:19:41,257 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-23 15:19:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:41,257 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-23 15:19:41,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:19:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-23 15:19:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:19:41,258 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:41,258 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-23 15:19:41,258 INFO L414 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash -838030037, now seen corresponding path program 100 times [2018-07-23 15:19:41,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:41,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:41,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:19:41,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:19:41,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:19:41,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:19:41,596 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 103 states. [2018-07-23 15:19:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:41,761 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2018-07-23 15:19:41,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:19:41,761 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 206 [2018-07-23 15:19:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:41,763 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:19:41,763 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:19:41,763 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:19:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:19:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:19:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:19:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-23 15:19:41,768 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-23 15:19:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:41,768 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-23 15:19:41,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:19:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-23 15:19:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:19:41,769 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:41,769 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-23 15:19:41,769 INFO L414 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:41,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2023427879, now seen corresponding path program 101 times [2018-07-23 15:19:41,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:42,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:42,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:19:42,069 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:19:42,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:19:42,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:19:42,071 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 104 states. [2018-07-23 15:19:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:42,217 INFO L93 Difference]: Finished difference Result 215 states and 217 transitions. [2018-07-23 15:19:42,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:19:42,217 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 208 [2018-07-23 15:19:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:42,218 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:19:42,219 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:19:42,219 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:19:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:19:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:19:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:19:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-23 15:19:42,224 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-23 15:19:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:42,224 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-23 15:19:42,224 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:19:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-23 15:19:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:19:42,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:42,226 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-23 15:19:42,226 INFO L414 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1189551581, now seen corresponding path program 102 times [2018-07-23 15:19:42,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:42,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:42,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:19:42,522 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:19:42,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:19:42,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:19:42,523 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 105 states. [2018-07-23 15:19:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:42,628 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2018-07-23 15:19:42,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:19:42,628 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 210 [2018-07-23 15:19:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:42,629 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:19:42,629 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:19:42,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:19:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:19:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:19:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:19:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-23 15:19:42,635 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-23 15:19:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:42,635 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-23 15:19:42,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:19:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-23 15:19:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:19:42,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:42,636 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-23 15:19:42,636 INFO L414 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash -781326817, now seen corresponding path program 103 times [2018-07-23 15:19:42,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:42,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:42,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:19:42,945 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:19:42,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:19:42,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:19:42,946 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 106 states. [2018-07-23 15:19:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:43,071 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-23 15:19:43,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:19:43,071 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 212 [2018-07-23 15:19:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:43,072 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:19:43,072 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:19:43,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:19:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:19:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:19:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:19:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-23 15:19:43,077 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-23 15:19:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:43,078 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-23 15:19:43,078 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:19:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-23 15:19:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:19:43,079 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:43,079 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-23 15:19:43,079 INFO L414 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:43,079 INFO L82 PathProgramCache]: Analyzing trace with hash 680647451, now seen corresponding path program 104 times [2018-07-23 15:19:43,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:43,399 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:43,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:19:43,399 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:19:43,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:19:43,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:19:43,401 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 107 states. [2018-07-23 15:19:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:43,561 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-23 15:19:43,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:19:43,561 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 214 [2018-07-23 15:19:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:43,561 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:19:43,561 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:19:43,562 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:19:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:19:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:19:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:19:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-23 15:19:43,567 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-23 15:19:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:43,567 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-23 15:19:43,567 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:19:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-23 15:19:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:19:43,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:43,568 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-23 15:19:43,569 INFO L414 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1183613207, now seen corresponding path program 105 times [2018-07-23 15:19:43,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:44,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:44,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:19:44,153 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:19:44,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:19:44,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:19:44,155 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 108 states. [2018-07-23 15:19:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:44,276 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2018-07-23 15:19:44,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:19:44,276 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 216 [2018-07-23 15:19:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:44,277 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:19:44,277 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:19:44,277 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:19:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:19:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:19:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:19:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-23 15:19:44,281 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-23 15:19:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:44,282 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-23 15:19:44,282 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:19:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-23 15:19:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:19:44,283 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:44,283 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-23 15:19:44,283 INFO L414 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash -797599725, now seen corresponding path program 106 times [2018-07-23 15:19:44,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:44,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:44,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:19:44,686 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:19:44,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:19:44,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:19:44,688 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 109 states. [2018-07-23 15:19:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:44,858 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2018-07-23 15:19:44,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:19:44,859 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 218 [2018-07-23 15:19:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:44,859 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:19:44,859 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:19:44,860 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:19:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:19:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:19:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:19:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-23 15:19:44,864 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-23 15:19:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:44,864 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-23 15:19:44,864 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:19:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-23 15:19:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:19:44,865 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:44,865 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-23 15:19:44,865 INFO L414 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:44,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2072715249, now seen corresponding path program 107 times [2018-07-23 15:19:44,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:45,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:45,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:19:45,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:19:45,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:19:45,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:19:45,210 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 110 states. [2018-07-23 15:19:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:45,403 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-23 15:19:45,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:19:45,403 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 220 [2018-07-23 15:19:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:45,403 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:19:45,403 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:19:45,404 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:19:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:19:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:19:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:19:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-23 15:19:45,407 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-23 15:19:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:45,407 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-23 15:19:45,407 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:19:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-23 15:19:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:19:45,408 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:45,408 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-23 15:19:45,408 INFO L414 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 901912843, now seen corresponding path program 108 times [2018-07-23 15:19:45,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:45,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:45,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:19:45,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:19:45,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:19:45,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:19:45,745 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 111 states. [2018-07-23 15:19:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:45,942 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2018-07-23 15:19:45,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:19:45,942 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 222 [2018-07-23 15:19:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:45,942 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:19:45,942 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:19:45,943 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:19:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:19:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:19:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:19:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-23 15:19:45,946 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-23 15:19:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:45,946 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-23 15:19:45,946 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:19:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-23 15:19:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:19:45,946 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:45,947 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-23 15:19:45,947 INFO L414 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash -928709881, now seen corresponding path program 109 times [2018-07-23 15:19:45,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:46,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:46,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:19:46,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:19:46,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:19:46,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:19:46,295 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 112 states. [2018-07-23 15:19:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:46,567 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2018-07-23 15:19:46,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:19:46,567 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 224 [2018-07-23 15:19:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:46,568 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:19:46,568 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:19:46,569 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:19:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:19:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:19:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:19:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-23 15:19:46,573 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-23 15:19:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:46,574 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-23 15:19:46,574 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:19:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-23 15:19:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:19:46,575 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:46,575 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-23 15:19:46,575 INFO L414 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash 779443715, now seen corresponding path program 110 times [2018-07-23 15:19:46,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:47,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:47,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:19:47,220 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:19:47,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:19:47,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:19:47,221 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 113 states. [2018-07-23 15:19:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:47,426 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-23 15:19:47,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:19:47,426 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 226 [2018-07-23 15:19:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:47,427 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:19:47,427 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:19:47,427 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:19:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:19:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:19:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:19:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-23 15:19:47,432 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-23 15:19:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:47,432 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-23 15:19:47,432 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:19:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-23 15:19:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:19:47,433 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:47,433 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-23 15:19:47,433 INFO L414 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1637542399, now seen corresponding path program 111 times [2018-07-23 15:19:47,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:47,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:47,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:19:47,792 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:19:47,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:19:47,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:19:47,793 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 114 states. [2018-07-23 15:19:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:48,005 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-23 15:19:48,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:19:48,005 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 228 [2018-07-23 15:19:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:48,006 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:19:48,006 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:19:48,007 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:19:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:19:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:19:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:19:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-23 15:19:48,011 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-23 15:19:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:48,011 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-23 15:19:48,011 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:19:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-23 15:19:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:19:48,012 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:48,012 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-23 15:19:48,013 INFO L414 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:48,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1636656891, now seen corresponding path program 112 times [2018-07-23 15:19:48,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:48,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:48,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:19:48,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:19:48,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:19:48,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:19:48,392 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 115 states. [2018-07-23 15:19:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:48,598 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-23 15:19:48,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:19:48,599 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 230 [2018-07-23 15:19:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:48,599 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:19:48,600 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:19:48,600 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:19:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:19:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:19:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:19:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-23 15:19:48,605 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-23 15:19:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:48,605 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-23 15:19:48,605 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:19:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-23 15:19:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:19:48,606 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:48,606 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-23 15:19:48,606 INFO L414 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash 785683703, now seen corresponding path program 113 times [2018-07-23 15:19:48,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:49,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:49,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:19:49,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:19:49,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:19:49,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:19:49,171 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 116 states. [2018-07-23 15:19:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:49,333 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2018-07-23 15:19:49,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:19:49,333 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 232 [2018-07-23 15:19:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:49,333 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:19:49,334 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:19:49,334 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:19:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:19:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:19:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:19:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-23 15:19:49,339 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-23 15:19:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:49,339 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-23 15:19:49,339 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:19:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-23 15:19:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:19:49,340 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:49,340 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-23 15:19:49,340 INFO L414 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash -955763725, now seen corresponding path program 114 times [2018-07-23 15:19:49,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:49,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:49,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:19:49,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:19:49,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:19:49,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:19:49,731 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 117 states. [2018-07-23 15:19:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:49,943 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2018-07-23 15:19:49,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:19:49,944 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 234 [2018-07-23 15:19:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:49,944 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:19:49,945 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:19:49,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:19:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:19:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:19:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:19:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-23 15:19:49,950 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-23 15:19:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:49,950 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-23 15:19:49,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:19:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-23 15:19:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:19:49,951 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:49,951 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1, 1, 1] [2018-07-23 15:19:49,951 INFO L414 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:49,951 INFO L82 PathProgramCache]: Analyzing trace with hash 550503407, now seen corresponding path program 115 times [2018-07-23 15:19:49,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:50,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:50,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:19:50,528 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:19:50,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:19:50,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:19:50,529 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 118 states. [2018-07-23 15:19:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:50,670 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-23 15:19:50,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:19:50,671 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 236 [2018-07-23 15:19:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:50,671 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:19:50,671 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:19:50,672 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:19:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:19:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-23 15:19:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-23 15:19:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-23 15:19:50,675 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-23 15:19:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:50,675 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-23 15:19:50,675 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:19:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-23 15:19:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-23 15:19:50,676 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:50,676 INFO L353 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1, 1, 1] [2018-07-23 15:19:50,676 INFO L414 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash 669238507, now seen corresponding path program 116 times [2018-07-23 15:19:50,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:51,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:51,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:19:51,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:19:51,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:19:51,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:19:51,060 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 119 states. [2018-07-23 15:19:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:51,199 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-23 15:19:51,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:19:51,199 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 238 [2018-07-23 15:19:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:51,200 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:19:51,200 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:19:51,200 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:19:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:19:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:19:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:19:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-23 15:19:51,204 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-23 15:19:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:51,205 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-23 15:19:51,205 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:19:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-23 15:19:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:19:51,206 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:51,206 INFO L353 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1, 1, 1] [2018-07-23 15:19:51,206 INFO L414 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1190447385, now seen corresponding path program 117 times [2018-07-23 15:19:51,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:51,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:51,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:19:51,596 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:19:51,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:19:51,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:19:51,598 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 120 states. [2018-07-23 15:19:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:51,855 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-23 15:19:51,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-23 15:19:51,855 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 240 [2018-07-23 15:19:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:51,855 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:19:51,856 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:19:51,856 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:19:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:19:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:19:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:19:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-23 15:19:51,860 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-23 15:19:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:51,860 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-23 15:19:51,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:19:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-23 15:19:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:19:51,862 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:51,862 INFO L353 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1, 1, 1] [2018-07-23 15:19:51,862 INFO L414 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:51,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1642194461, now seen corresponding path program 118 times [2018-07-23 15:19:51,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:52,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:52,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:19:52,266 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:19:52,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:19:52,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:19:52,268 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 121 states. [2018-07-23 15:19:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:52,507 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2018-07-23 15:19:52,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:19:52,507 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 242 [2018-07-23 15:19:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:52,508 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:19:52,508 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:19:52,509 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:19:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:19:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:19:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:19:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-23 15:19:52,511 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-23 15:19:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:52,512 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-23 15:19:52,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:19:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-23 15:19:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:19:52,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:52,512 INFO L353 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1, 1, 1] [2018-07-23 15:19:52,512 INFO L414 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1979437601, now seen corresponding path program 119 times [2018-07-23 15:19:52,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:52,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:52,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-23 15:19:52,932 INFO L450 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-23 15:19:52,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-23 15:19:52,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:19:52,933 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 122 states. [2018-07-23 15:19:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:53,029 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-23 15:19:53,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-23 15:19:53,030 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 244 [2018-07-23 15:19:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:53,030 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:19:53,030 INFO L226 Difference]: Without dead ends: 247 [2018-07-23 15:19:53,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:19:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-23 15:19:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-23 15:19:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-23 15:19:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-23 15:19:53,035 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-23 15:19:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:53,035 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-23 15:19:53,035 INFO L472 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-23 15:19:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-23 15:19:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 15:19:53,036 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:53,036 INFO L353 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1, 1, 1] [2018-07-23 15:19:53,036 INFO L414 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:53,037 INFO L82 PathProgramCache]: Analyzing trace with hash 347419355, now seen corresponding path program 120 times [2018-07-23 15:19:53,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:53,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:53,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:19:53,511 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:19:53,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:19:53,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:19:53,512 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 123 states. [2018-07-23 15:19:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:53,785 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2018-07-23 15:19:53,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:19:53,785 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 246 [2018-07-23 15:19:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:53,785 INFO L225 Difference]: With dead ends: 253 [2018-07-23 15:19:53,785 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:19:53,786 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:19:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:19:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:19:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:19:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-23 15:19:53,790 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-23 15:19:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:53,791 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-23 15:19:53,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:19:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-23 15:19:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:19:53,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:53,792 INFO L353 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1, 1, 1] [2018-07-23 15:19:53,792 INFO L414 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1221007145, now seen corresponding path program 121 times [2018-07-23 15:19:53,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:54,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:54,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:19:54,242 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:19:54,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:19:54,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:19:54,244 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 124 states. [2018-07-23 15:19:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:54,528 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2018-07-23 15:19:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-23 15:19:54,528 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 248 [2018-07-23 15:19:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:54,528 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:19:54,528 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:19:54,529 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:19:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:19:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:19:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:19:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-23 15:19:54,532 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-23 15:19:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:54,532 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-23 15:19:54,532 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:19:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-23 15:19:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:19:54,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:54,533 INFO L353 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1, 1, 1] [2018-07-23 15:19:54,533 INFO L414 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash -945352749, now seen corresponding path program 122 times [2018-07-23 15:19:54,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:55,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:55,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:19:55,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:19:55,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:19:55,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:19:55,066 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 125 states. [2018-07-23 15:19:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:55,326 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-23 15:19:55,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:19:55,326 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 250 [2018-07-23 15:19:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:55,327 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:19:55,327 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:19:55,328 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:19:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:19:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:19:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:19:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-23 15:19:55,332 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-23 15:19:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:55,333 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-23 15:19:55,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:19:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-23 15:19:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:19:55,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:55,334 INFO L353 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1, 1, 1] [2018-07-23 15:19:55,334 INFO L414 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:55,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1965516751, now seen corresponding path program 123 times [2018-07-23 15:19:55,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:55,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:55,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-23 15:19:55,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-23 15:19:55,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-23 15:19:55,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:19:55,792 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 126 states. [2018-07-23 15:19:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:56,064 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-23 15:19:56,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-23 15:19:56,064 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 252 [2018-07-23 15:19:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:56,064 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:19:56,065 INFO L226 Difference]: Without dead ends: 255 [2018-07-23 15:19:56,065 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:19:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-23 15:19:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-23 15:19:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-23 15:19:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-23 15:19:56,068 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-23 15:19:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:56,069 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-23 15:19:56,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-23 15:19:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-23 15:19:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-23 15:19:56,070 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:56,070 INFO L353 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1, 1, 1] [2018-07-23 15:19:56,070 INFO L414 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1007570741, now seen corresponding path program 124 times [2018-07-23 15:19:56,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:56,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:56,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:19:56,556 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:19:56,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:19:56,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:19:56,558 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 127 states. [2018-07-23 15:19:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:56,838 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2018-07-23 15:19:56,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:19:56,838 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 254 [2018-07-23 15:19:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:56,839 INFO L225 Difference]: With dead ends: 261 [2018-07-23 15:19:56,839 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:19:56,840 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:19:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:19:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-23 15:19:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-23 15:19:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-23 15:19:56,845 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-23 15:19:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:56,846 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-23 15:19:56,846 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:19:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-23 15:19:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 15:19:56,847 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:56,848 INFO L353 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1, 1, 1] [2018-07-23 15:19:56,848 INFO L414 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1991398713, now seen corresponding path program 125 times [2018-07-23 15:19:56,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:57,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:57,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:19:57,441 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:19:57,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:19:57,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:19:57,442 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 128 states. [2018-07-23 15:19:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:57,742 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-07-23 15:19:57,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-23 15:19:57,742 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 256 [2018-07-23 15:19:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:57,743 INFO L225 Difference]: With dead ends: 263 [2018-07-23 15:19:57,743 INFO L226 Difference]: Without dead ends: 259 [2018-07-23 15:19:57,743 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:19:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-23 15:19:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-23 15:19:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-23 15:19:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-23 15:19:57,748 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-23 15:19:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:57,748 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-23 15:19:57,748 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:19:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-23 15:19:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-23 15:19:57,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:57,749 INFO L353 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1, 1, 1] [2018-07-23 15:19:57,749 INFO L414 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:57,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1737692611, now seen corresponding path program 126 times [2018-07-23 15:19:57,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:58,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:58,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:19:58,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:19:58,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:19:58,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:19:58,219 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 129 states. [2018-07-23 15:19:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:58,539 INFO L93 Difference]: Finished difference Result 265 states and 267 transitions. [2018-07-23 15:19:58,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:19:58,539 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 258 [2018-07-23 15:19:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:58,540 INFO L225 Difference]: With dead ends: 265 [2018-07-23 15:19:58,540 INFO L226 Difference]: Without dead ends: 261 [2018-07-23 15:19:58,540 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:19:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-23 15:19:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-23 15:19:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-23 15:19:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-23 15:19:58,543 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-23 15:19:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:58,543 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-23 15:19:58,544 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:19:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-23 15:19:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-23 15:19:58,544 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:58,545 INFO L353 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1, 1, 1] [2018-07-23 15:19:58,545 INFO L414 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:58,545 INFO L82 PathProgramCache]: Analyzing trace with hash -903237185, now seen corresponding path program 127 times [2018-07-23 15:19:58,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:59,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:59,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-23 15:19:59,247 INFO L450 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-23 15:19:59,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-23 15:19:59,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:19:59,256 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 130 states. [2018-07-23 15:19:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:59,475 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-23 15:19:59,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-23 15:19:59,476 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 260 [2018-07-23 15:19:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:59,477 INFO L225 Difference]: With dead ends: 267 [2018-07-23 15:19:59,477 INFO L226 Difference]: Without dead ends: 263 [2018-07-23 15:19:59,478 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:19:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-23 15:19:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-23 15:19:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-23 15:19:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-23 15:19:59,482 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-23 15:19:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:59,482 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-23 15:19:59,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-23 15:19:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-23 15:19:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-23 15:19:59,483 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:59,483 INFO L353 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1, 1, 1] [2018-07-23 15:19:59,483 INFO L414 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:59,483 INFO L82 PathProgramCache]: Analyzing trace with hash -511099205, now seen corresponding path program 128 times [2018-07-23 15:19:59,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:59,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:59,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-23 15:19:59,992 INFO L450 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-23 15:19:59,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-23 15:19:59,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:19:59,994 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 131 states. [2018-07-23 15:20:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:00,278 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-23 15:20:00,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:20:00,278 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 262 [2018-07-23 15:20:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:00,279 INFO L225 Difference]: With dead ends: 269 [2018-07-23 15:20:00,279 INFO L226 Difference]: Without dead ends: 265 [2018-07-23 15:20:00,280 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:20:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-23 15:20:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-23 15:20:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-23 15:20:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-23 15:20:00,284 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-23 15:20:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:00,285 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-23 15:20:00,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-23 15:20:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-23 15:20:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-23 15:20:00,286 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:00,286 INFO L353 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1, 1, 1] [2018-07-23 15:20:00,286 INFO L414 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:00,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1623622473, now seen corresponding path program 129 times [2018-07-23 15:20:00,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:00,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:00,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:20:00,826 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:20:00,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:20:00,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:20:00,828 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 132 states. [2018-07-23 15:20:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:01,173 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2018-07-23 15:20:01,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-23 15:20:01,173 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 264 [2018-07-23 15:20:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:01,174 INFO L225 Difference]: With dead ends: 271 [2018-07-23 15:20:01,174 INFO L226 Difference]: Without dead ends: 267 [2018-07-23 15:20:01,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:20:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-23 15:20:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-23 15:20:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-23 15:20:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-23 15:20:01,177 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-23 15:20:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:01,178 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-23 15:20:01,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:20:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-23 15:20:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 15:20:01,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:01,179 INFO L353 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1, 1, 1] [2018-07-23 15:20:01,179 INFO L414 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1311626317, now seen corresponding path program 130 times [2018-07-23 15:20:01,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:01,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:01,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:20:01,687 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:20:01,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:20:01,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:20:01,689 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 133 states. [2018-07-23 15:20:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:01,814 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2018-07-23 15:20:01,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:20:01,815 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 266 [2018-07-23 15:20:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:01,815 INFO L225 Difference]: With dead ends: 273 [2018-07-23 15:20:01,815 INFO L226 Difference]: Without dead ends: 269 [2018-07-23 15:20:01,816 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:20:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-23 15:20:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-23 15:20:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-23 15:20:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-23 15:20:01,819 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-23 15:20:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:01,820 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-23 15:20:01,820 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:20:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-23 15:20:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-23 15:20:01,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:01,820 INFO L353 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1, 1, 1] [2018-07-23 15:20:01,821 INFO L414 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2131031121, now seen corresponding path program 131 times [2018-07-23 15:20:01,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:02,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:02,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-23 15:20:02,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-23 15:20:02,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-23 15:20:02,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:20:02,333 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 134 states. [2018-07-23 15:20:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:02,694 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-23 15:20:02,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-23 15:20:02,694 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 268 [2018-07-23 15:20:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:02,695 INFO L225 Difference]: With dead ends: 275 [2018-07-23 15:20:02,695 INFO L226 Difference]: Without dead ends: 271 [2018-07-23 15:20:02,696 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:20:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-23 15:20:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-23 15:20:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-23 15:20:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-23 15:20:02,699 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-23 15:20:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:02,699 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-23 15:20:02,699 INFO L472 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-23 15:20:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-23 15:20:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-23 15:20:02,700 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:02,700 INFO L353 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1, 1, 1] [2018-07-23 15:20:02,700 INFO L414 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:02,700 INFO L82 PathProgramCache]: Analyzing trace with hash 694934699, now seen corresponding path program 132 times [2018-07-23 15:20:02,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:03,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:03,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-23 15:20:03,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-23 15:20:03,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-23 15:20:03,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:20:03,202 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 135 states. [2018-07-23 15:20:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:03,520 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2018-07-23 15:20:03,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:20:03,520 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 270 [2018-07-23 15:20:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:03,521 INFO L225 Difference]: With dead ends: 277 [2018-07-23 15:20:03,521 INFO L226 Difference]: Without dead ends: 273 [2018-07-23 15:20:03,521 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:20:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-23 15:20:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-23 15:20:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-23 15:20:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-23 15:20:03,525 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-23 15:20:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:03,525 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-23 15:20:03,525 INFO L472 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-23 15:20:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-23 15:20:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-23 15:20:03,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:03,527 INFO L353 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1, 1, 1] [2018-07-23 15:20:03,527 INFO L414 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:03,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2028756647, now seen corresponding path program 133 times [2018-07-23 15:20:03,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:04,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:04,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:20:04,118 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:20:04,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:20:04,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:20:04,121 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 136 states. [2018-07-23 15:20:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:04,545 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2018-07-23 15:20:04,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-23 15:20:04,546 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 272 [2018-07-23 15:20:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:04,546 INFO L225 Difference]: With dead ends: 279 [2018-07-23 15:20:04,546 INFO L226 Difference]: Without dead ends: 275 [2018-07-23 15:20:04,547 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:20:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-23 15:20:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-23 15:20:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-23 15:20:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-23 15:20:04,550 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-23 15:20:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:04,550 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-23 15:20:04,550 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:20:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-23 15:20:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-23 15:20:04,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:04,551 INFO L353 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1, 1, 1] [2018-07-23 15:20:04,551 INFO L414 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash -363572829, now seen corresponding path program 134 times [2018-07-23 15:20:04,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:05,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:05,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:20:05,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:20:05,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:20:05,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:20:05,114 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 137 states. [2018-07-23 15:20:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:05,491 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-23 15:20:05,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:20:05,491 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 274 [2018-07-23 15:20:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:05,492 INFO L225 Difference]: With dead ends: 281 [2018-07-23 15:20:05,492 INFO L226 Difference]: Without dead ends: 277 [2018-07-23 15:20:05,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:20:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-23 15:20:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-23 15:20:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-23 15:20:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-23 15:20:05,496 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-23 15:20:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:05,496 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-23 15:20:05,496 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:20:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-23 15:20:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-23 15:20:05,497 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:05,497 INFO L353 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1, 1, 1] [2018-07-23 15:20:05,497 INFO L414 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:05,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1584695905, now seen corresponding path program 135 times [2018-07-23 15:20:05,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:06,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:06,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-23 15:20:06,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-23 15:20:06,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-23 15:20:06,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:20:06,176 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 138 states. [2018-07-23 15:20:06,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:06,442 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-23 15:20:06,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-23 15:20:06,442 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 276 [2018-07-23 15:20:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:06,443 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:20:06,443 INFO L226 Difference]: Without dead ends: 279 [2018-07-23 15:20:06,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:20:06,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-23 15:20:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-23 15:20:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-23 15:20:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-23 15:20:06,448 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-23 15:20:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:06,449 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-23 15:20:06,449 INFO L472 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-23 15:20:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-23 15:20:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-23 15:20:06,450 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:06,450 INFO L353 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1, 1, 1] [2018-07-23 15:20:06,450 INFO L414 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:06,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1737067163, now seen corresponding path program 136 times [2018-07-23 15:20:06,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:07,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:07,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-23 15:20:07,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-23 15:20:07,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-23 15:20:07,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:20:07,129 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 139 states. [2018-07-23 15:20:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:07,339 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2018-07-23 15:20:07,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:20:07,340 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 278 [2018-07-23 15:20:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:07,340 INFO L225 Difference]: With dead ends: 285 [2018-07-23 15:20:07,340 INFO L226 Difference]: Without dead ends: 281 [2018-07-23 15:20:07,341 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:20:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-23 15:20:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-23 15:20:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-23 15:20:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-23 15:20:07,345 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-23 15:20:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:07,345 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-23 15:20:07,346 INFO L472 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-23 15:20:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-23 15:20:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-23 15:20:07,347 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:07,347 INFO L353 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1, 1, 1] [2018-07-23 15:20:07,347 INFO L414 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1504292713, now seen corresponding path program 137 times [2018-07-23 15:20:07,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:08,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:08,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:20:08,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:20:08,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:20:08,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:20:08,027 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 140 states. [2018-07-23 15:20:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:08,196 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-23 15:20:08,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-23 15:20:08,196 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 280 [2018-07-23 15:20:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:08,197 INFO L225 Difference]: With dead ends: 287 [2018-07-23 15:20:08,197 INFO L226 Difference]: Without dead ends: 283 [2018-07-23 15:20:08,198 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:20:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-23 15:20:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-23 15:20:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-23 15:20:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-23 15:20:08,201 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-23 15:20:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:08,201 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-23 15:20:08,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:20:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-23 15:20:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-23 15:20:08,202 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:08,202 INFO L353 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1, 1, 1] [2018-07-23 15:20:08,202 INFO L414 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:08,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1695123347, now seen corresponding path program 138 times [2018-07-23 15:20:08,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:08,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:08,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:20:08,833 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:20:08,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:20:08,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:20:08,835 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 141 states. [2018-07-23 15:20:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:09,013 INFO L93 Difference]: Finished difference Result 289 states and 291 transitions. [2018-07-23 15:20:09,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:20:09,013 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 282 [2018-07-23 15:20:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:09,014 INFO L225 Difference]: With dead ends: 289 [2018-07-23 15:20:09,014 INFO L226 Difference]: Without dead ends: 285 [2018-07-23 15:20:09,015 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:20:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-23 15:20:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-23 15:20:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-23 15:20:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-23 15:20:09,017 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-23 15:20:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:09,018 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-23 15:20:09,018 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:20:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-23 15:20:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-23 15:20:09,018 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:09,019 INFO L353 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1, 1, 1] [2018-07-23 15:20:09,019 INFO L414 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:09,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1137373071, now seen corresponding path program 139 times [2018-07-23 15:20:09,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:09,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:09,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-23 15:20:09,674 INFO L450 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-23 15:20:09,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-23 15:20:09,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:20:09,676 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 142 states. [2018-07-23 15:20:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:09,889 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-23 15:20:09,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-23 15:20:09,890 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 284 [2018-07-23 15:20:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:09,890 INFO L225 Difference]: With dead ends: 291 [2018-07-23 15:20:09,890 INFO L226 Difference]: Without dead ends: 287 [2018-07-23 15:20:09,891 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:20:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-23 15:20:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-23 15:20:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-23 15:20:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-23 15:20:09,894 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-23 15:20:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-23 15:20:09,894 INFO L472 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-23 15:20:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-23 15:20:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-23 15:20:09,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:09,896 INFO L353 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1, 1, 1] [2018-07-23 15:20:09,896 INFO L414 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2010269835, now seen corresponding path program 140 times [2018-07-23 15:20:09,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:10,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:10,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-23 15:20:10,641 INFO L450 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-23 15:20:10,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-23 15:20:10,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:20:10,644 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 143 states. [2018-07-23 15:20:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:10,955 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-23 15:20:10,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:20:10,955 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 286 [2018-07-23 15:20:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:10,956 INFO L225 Difference]: With dead ends: 293 [2018-07-23 15:20:10,956 INFO L226 Difference]: Without dead ends: 289 [2018-07-23 15:20:10,957 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:20:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-23 15:20:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-23 15:20:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-23 15:20:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-23 15:20:10,961 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-23 15:20:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:10,961 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-23 15:20:10,961 INFO L472 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-23 15:20:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-23 15:20:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-23 15:20:10,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:10,962 INFO L353 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1, 1, 1] [2018-07-23 15:20:10,962 INFO L414 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:10,962 INFO L82 PathProgramCache]: Analyzing trace with hash -949529977, now seen corresponding path program 141 times [2018-07-23 15:20:10,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:11,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:11,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:20:11,655 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:20:11,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:20:11,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:20:11,657 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 144 states. [2018-07-23 15:20:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:12,151 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2018-07-23 15:20:12,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-23 15:20:12,151 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 288 [2018-07-23 15:20:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:12,152 INFO L225 Difference]: With dead ends: 295 [2018-07-23 15:20:12,152 INFO L226 Difference]: Without dead ends: 291 [2018-07-23 15:20:12,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:20:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-23 15:20:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-23 15:20:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-23 15:20:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-23 15:20:12,157 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-23 15:20:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:12,158 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-23 15:20:12,158 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:20:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-23 15:20:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-23 15:20:12,159 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:12,159 INFO L353 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1, 1, 1] [2018-07-23 15:20:12,159 INFO L414 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2048799357, now seen corresponding path program 142 times [2018-07-23 15:20:12,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:12,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:12,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:20:12,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:20:12,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:20:12,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:20:12,864 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 145 states. [2018-07-23 15:20:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:13,438 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-23 15:20:13,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:20:13,438 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 290 [2018-07-23 15:20:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:13,438 INFO L225 Difference]: With dead ends: 297 [2018-07-23 15:20:13,439 INFO L226 Difference]: Without dead ends: 293 [2018-07-23 15:20:13,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:20:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-23 15:20:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-23 15:20:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-23 15:20:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-23 15:20:13,442 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-23 15:20:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:13,443 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-23 15:20:13,443 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:20:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-23 15:20:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-23 15:20:13,443 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:13,444 INFO L353 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1, 1, 1] [2018-07-23 15:20:13,444 INFO L414 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1884718721, now seen corresponding path program 143 times [2018-07-23 15:20:13,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:14,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:14,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-23 15:20:14,140 INFO L450 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-23 15:20:14,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-23 15:20:14,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:20:14,142 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 146 states. [2018-07-23 15:20:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:14,652 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-23 15:20:14,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-23 15:20:14,652 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 292 [2018-07-23 15:20:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:14,653 INFO L225 Difference]: With dead ends: 299 [2018-07-23 15:20:14,653 INFO L226 Difference]: Without dead ends: 295 [2018-07-23 15:20:14,654 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:20:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-23 15:20:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-23 15:20:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-23 15:20:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-23 15:20:14,658 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-23 15:20:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:14,658 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-23 15:20:14,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-23 15:20:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-23 15:20:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-23 15:20:14,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:14,660 INFO L353 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1, 1, 1] [2018-07-23 15:20:14,660 INFO L414 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:14,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1177949819, now seen corresponding path program 144 times [2018-07-23 15:20:14,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:15,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:15,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-23 15:20:15,369 INFO L450 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-23 15:20:15,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-23 15:20:15,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:20:15,371 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 147 states. [2018-07-23 15:20:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:15,874 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2018-07-23 15:20:15,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:20:15,874 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 294 [2018-07-23 15:20:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:15,875 INFO L225 Difference]: With dead ends: 301 [2018-07-23 15:20:15,875 INFO L226 Difference]: Without dead ends: 297 [2018-07-23 15:20:15,876 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:20:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-23 15:20:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-23 15:20:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-23 15:20:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-23 15:20:15,881 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-23 15:20:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:15,881 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-23 15:20:15,881 INFO L472 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-23 15:20:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-23 15:20:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-23 15:20:15,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:15,883 INFO L353 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1, 1, 1] [2018-07-23 15:20:15,883 INFO L414 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1945148297, now seen corresponding path program 145 times [2018-07-23 15:20:15,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:16,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:16,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:20:16,645 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:20:16,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:20:16,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:20:16,647 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 148 states. [2018-07-23 15:20:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:16,847 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2018-07-23 15:20:16,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-23 15:20:16,847 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 296 [2018-07-23 15:20:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:16,847 INFO L225 Difference]: With dead ends: 303 [2018-07-23 15:20:16,848 INFO L226 Difference]: Without dead ends: 299 [2018-07-23 15:20:16,849 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:20:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-23 15:20:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-23 15:20:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-23 15:20:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-23 15:20:16,853 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-23 15:20:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-23 15:20:16,854 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:20:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-23 15:20:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-23 15:20:16,855 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:16,855 INFO L353 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1, 1, 1] [2018-07-23 15:20:16,855 INFO L414 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:16,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1060297869, now seen corresponding path program 146 times [2018-07-23 15:20:16,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:17,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:17,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:20:17,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:20:17,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:20:17,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:20:17,621 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 149 states. [2018-07-23 15:20:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:18,339 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-23 15:20:18,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:20:18,339 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 298 [2018-07-23 15:20:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:18,340 INFO L225 Difference]: With dead ends: 305 [2018-07-23 15:20:18,340 INFO L226 Difference]: Without dead ends: 301 [2018-07-23 15:20:18,342 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:20:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-23 15:20:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-23 15:20:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-23 15:20:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-23 15:20:18,346 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-23 15:20:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:18,347 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-23 15:20:18,347 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:20:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-23 15:20:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-23 15:20:18,348 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:18,348 INFO L353 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1, 1, 1] [2018-07-23 15:20:18,348 INFO L414 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1122561169, now seen corresponding path program 147 times [2018-07-23 15:20:18,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:19,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:19,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-23 15:20:19,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-23 15:20:19,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-23 15:20:19,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:20:19,261 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 150 states. [2018-07-23 15:20:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:19,832 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-23 15:20:19,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-23 15:20:19,832 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 300 [2018-07-23 15:20:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:19,833 INFO L225 Difference]: With dead ends: 307 [2018-07-23 15:20:19,833 INFO L226 Difference]: Without dead ends: 303 [2018-07-23 15:20:19,834 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:20:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-23 15:20:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-23 15:20:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-23 15:20:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-23 15:20:19,837 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-23 15:20:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:19,837 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-23 15:20:19,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-23 15:20:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-23 15:20:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-23 15:20:19,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:19,838 INFO L353 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1, 1, 1] [2018-07-23 15:20:19,838 INFO L414 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash -828050325, now seen corresponding path program 148 times [2018-07-23 15:20:19,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:20,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:20,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-23 15:20:20,710 INFO L450 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-23 15:20:20,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-23 15:20:20,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:20:20,711 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 151 states. [2018-07-23 15:20:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:20,907 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2018-07-23 15:20:20,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:20:20,907 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 302 [2018-07-23 15:20:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:20,908 INFO L225 Difference]: With dead ends: 309 [2018-07-23 15:20:20,908 INFO L226 Difference]: Without dead ends: 305 [2018-07-23 15:20:20,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:20:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-23 15:20:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-23 15:20:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-23 15:20:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-23 15:20:20,912 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-23 15:20:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:20,912 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-23 15:20:20,912 INFO L472 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-23 15:20:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-23 15:20:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-23 15:20:20,913 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:20,913 INFO L353 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1, 1, 1] [2018-07-23 15:20:20,913 INFO L414 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:20,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1270970777, now seen corresponding path program 149 times [2018-07-23 15:20:20,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:21,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:21,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:20:21,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:20:21,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:20:21,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:20:21,739 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 152 states. [2018-07-23 15:20:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:22,437 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2018-07-23 15:20:22,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-23 15:20:22,437 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 304 [2018-07-23 15:20:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:22,438 INFO L225 Difference]: With dead ends: 311 [2018-07-23 15:20:22,438 INFO L226 Difference]: Without dead ends: 307 [2018-07-23 15:20:22,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:20:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-23 15:20:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-23 15:20:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-23 15:20:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-23 15:20:22,443 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-23 15:20:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:22,443 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-23 15:20:22,443 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:20:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-23 15:20:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-23 15:20:22,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:22,444 INFO L353 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1, 1, 1] [2018-07-23 15:20:22,444 INFO L414 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1715762845, now seen corresponding path program 150 times [2018-07-23 15:20:22,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:23,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:23,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:20:23,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:20:23,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:20:23,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:20:23,257 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 153 states. [2018-07-23 15:20:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:23,794 INFO L93 Difference]: Finished difference Result 313 states and 315 transitions. [2018-07-23 15:20:23,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:20:23,794 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 306 [2018-07-23 15:20:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:23,795 INFO L225 Difference]: With dead ends: 313 [2018-07-23 15:20:23,795 INFO L226 Difference]: Without dead ends: 309 [2018-07-23 15:20:23,796 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:20:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-23 15:20:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-23 15:20:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-23 15:20:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-23 15:20:23,799 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-23 15:20:23,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:23,799 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-23 15:20:23,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:20:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-23 15:20:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-23 15:20:23,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:23,800 INFO L353 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1, 1, 1] [2018-07-23 15:20:23,800 INFO L414 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash 335789407, now seen corresponding path program 151 times [2018-07-23 15:20:23,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:24,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:24,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-23 15:20:24,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-23 15:20:24,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-23 15:20:24,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:20:24,627 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 154 states. [2018-07-23 15:20:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:25,280 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-23 15:20:25,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-23 15:20:25,280 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 308 [2018-07-23 15:20:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:25,281 INFO L225 Difference]: With dead ends: 315 [2018-07-23 15:20:25,281 INFO L226 Difference]: Without dead ends: 311 [2018-07-23 15:20:25,282 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:20:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-23 15:20:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-23 15:20:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-23 15:20:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-23 15:20:25,287 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-23 15:20:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:25,287 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-23 15:20:25,287 INFO L472 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-23 15:20:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-23 15:20:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-23 15:20:25,289 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:25,289 INFO L353 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1, 1, 1] [2018-07-23 15:20:25,289 INFO L414 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash 487514715, now seen corresponding path program 152 times [2018-07-23 15:20:25,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:26,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:26,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-23 15:20:26,170 INFO L450 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-23 15:20:26,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-23 15:20:26,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:20:26,172 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 155 states. [2018-07-23 15:20:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:26,817 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-23 15:20:26,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:20:26,817 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 310 [2018-07-23 15:20:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:26,818 INFO L225 Difference]: With dead ends: 317 [2018-07-23 15:20:26,818 INFO L226 Difference]: Without dead ends: 313 [2018-07-23 15:20:26,819 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:20:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-23 15:20:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-23 15:20:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-23 15:20:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-23 15:20:26,822 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-23 15:20:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:26,822 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-23 15:20:26,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-23 15:20:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-23 15:20:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-23 15:20:26,823 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:26,823 INFO L353 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1, 1, 1] [2018-07-23 15:20:26,823 INFO L414 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:26,823 INFO L82 PathProgramCache]: Analyzing trace with hash 266647639, now seen corresponding path program 153 times [2018-07-23 15:20:26,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:27,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:27,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:20:27,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:20:27,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:20:27,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:20:27,681 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 156 states. [2018-07-23 15:20:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:28,394 INFO L93 Difference]: Finished difference Result 319 states and 321 transitions. [2018-07-23 15:20:28,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-23 15:20:28,394 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 312 [2018-07-23 15:20:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:28,394 INFO L225 Difference]: With dead ends: 319 [2018-07-23 15:20:28,394 INFO L226 Difference]: Without dead ends: 315 [2018-07-23 15:20:28,395 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:20:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-23 15:20:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-23 15:20:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-23 15:20:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-23 15:20:28,398 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-23 15:20:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:28,399 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-23 15:20:28,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:20:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-23 15:20:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-23 15:20:28,400 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:28,400 INFO L353 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1, 1, 1] [2018-07-23 15:20:28,400 INFO L414 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1533214893, now seen corresponding path program 154 times [2018-07-23 15:20:28,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:29,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:29,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:20:29,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:20:29,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:20:29,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:20:29,258 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 157 states. [2018-07-23 15:20:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:29,704 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2018-07-23 15:20:29,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:20:29,704 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 314 [2018-07-23 15:20:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:29,704 INFO L225 Difference]: With dead ends: 321 [2018-07-23 15:20:29,704 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:20:29,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:20:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:20:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-23 15:20:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-23 15:20:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-23 15:20:29,709 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-23 15:20:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:29,709 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-23 15:20:29,709 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:20:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-23 15:20:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-23 15:20:29,710 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:29,710 INFO L353 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1, 1, 1] [2018-07-23 15:20:29,710 INFO L414 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -329287857, now seen corresponding path program 155 times [2018-07-23 15:20:29,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:30,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:30,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-23 15:20:30,598 INFO L450 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-23 15:20:30,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-23 15:20:30,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:20:30,601 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 158 states. [2018-07-23 15:20:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:31,424 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-23 15:20:31,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-23 15:20:31,424 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 316 [2018-07-23 15:20:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:31,425 INFO L225 Difference]: With dead ends: 323 [2018-07-23 15:20:31,425 INFO L226 Difference]: Without dead ends: 319 [2018-07-23 15:20:31,426 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:20:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-23 15:20:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-23 15:20:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-23 15:20:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-23 15:20:31,431 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-23 15:20:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:31,431 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-23 15:20:31,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-23 15:20:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-23 15:20:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-23 15:20:31,432 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:31,433 INFO L353 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1, 1, 1] [2018-07-23 15:20:31,433 INFO L414 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1298391115, now seen corresponding path program 156 times [2018-07-23 15:20:31,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:32,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:32,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-23 15:20:32,457 INFO L450 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-23 15:20:32,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-23 15:20:32,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:20:32,460 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 159 states. [2018-07-23 15:20:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:32,814 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2018-07-23 15:20:32,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:20:32,814 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 318 [2018-07-23 15:20:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:32,815 INFO L225 Difference]: With dead ends: 325 [2018-07-23 15:20:32,815 INFO L226 Difference]: Without dead ends: 321 [2018-07-23 15:20:32,816 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:20:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-23 15:20:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-23 15:20:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-23 15:20:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-23 15:20:32,819 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-23 15:20:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:32,820 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-23 15:20:32,820 INFO L472 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-23 15:20:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-23 15:20:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-23 15:20:32,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:32,821 INFO L353 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1, 1, 1] [2018-07-23 15:20:32,821 INFO L414 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:32,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2129787463, now seen corresponding path program 157 times [2018-07-23 15:20:32,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:33,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:33,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:20:33,734 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:20:33,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:20:33,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:20:33,737 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 160 states. [2018-07-23 15:20:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:34,427 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-23 15:20:34,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-23 15:20:34,427 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 320 [2018-07-23 15:20:34,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:34,427 INFO L225 Difference]: With dead ends: 327 [2018-07-23 15:20:34,428 INFO L226 Difference]: Without dead ends: 323 [2018-07-23 15:20:34,428 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:20:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-23 15:20:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-23 15:20:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-23 15:20:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-23 15:20:34,433 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-23 15:20:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:34,434 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-23 15:20:34,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:20:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-23 15:20:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-23 15:20:34,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:34,435 INFO L353 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1, 1, 1] [2018-07-23 15:20:34,435 INFO L414 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:34,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2057206461, now seen corresponding path program 158 times [2018-07-23 15:20:34,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:35,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:35,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:20:35,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:20:35,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:20:35,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:20:35,411 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 161 states. [2018-07-23 15:20:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:36,258 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-23 15:20:36,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:20:36,258 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 322 [2018-07-23 15:20:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:36,259 INFO L225 Difference]: With dead ends: 329 [2018-07-23 15:20:36,259 INFO L226 Difference]: Without dead ends: 325 [2018-07-23 15:20:36,260 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:20:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-23 15:20:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-23 15:20:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-23 15:20:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-23 15:20:36,263 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-23 15:20:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:36,263 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-23 15:20:36,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:20:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-23 15:20:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-23 15:20:36,264 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:36,264 INFO L353 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1, 1, 1] [2018-07-23 15:20:36,265 INFO L414 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:36,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1374011073, now seen corresponding path program 159 times [2018-07-23 15:20:36,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:37,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:37,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-23 15:20:37,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-23 15:20:37,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-23 15:20:37,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:20:37,177 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 162 states. [2018-07-23 15:20:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:37,774 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-23 15:20:37,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-23 15:20:37,774 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 324 [2018-07-23 15:20:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:37,775 INFO L225 Difference]: With dead ends: 331 [2018-07-23 15:20:37,775 INFO L226 Difference]: Without dead ends: 327 [2018-07-23 15:20:37,776 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:20:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-23 15:20:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-23 15:20:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-23 15:20:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-23 15:20:37,780 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-23 15:20:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:37,780 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-23 15:20:37,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-23 15:20:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-23 15:20:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-23 15:20:37,781 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:37,781 INFO L353 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1, 1, 1] [2018-07-23 15:20:37,781 INFO L414 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1953239493, now seen corresponding path program 160 times [2018-07-23 15:20:37,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:38,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:38,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-23 15:20:38,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-23 15:20:38,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-23 15:20:38,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:20:38,773 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 163 states. [2018-07-23 15:20:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:39,017 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-07-23 15:20:39,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:20:39,017 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 326 [2018-07-23 15:20:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:39,018 INFO L225 Difference]: With dead ends: 333 [2018-07-23 15:20:39,018 INFO L226 Difference]: Without dead ends: 329 [2018-07-23 15:20:39,019 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:20:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-23 15:20:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-23 15:20:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-23 15:20:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-23 15:20:39,022 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-23 15:20:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:39,022 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-23 15:20:39,022 INFO L472 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-23 15:20:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-23 15:20:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-23 15:20:39,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:39,023 INFO L353 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1, 1, 1] [2018-07-23 15:20:39,023 INFO L414 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash -246002633, now seen corresponding path program 161 times [2018-07-23 15:20:39,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:39,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:39,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:20:39,997 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:20:39,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:20:40,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:20:40,000 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 164 states. [2018-07-23 15:20:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:40,661 INFO L93 Difference]: Finished difference Result 335 states and 337 transitions. [2018-07-23 15:20:40,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-23 15:20:40,661 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 328 [2018-07-23 15:20:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:40,662 INFO L225 Difference]: With dead ends: 335 [2018-07-23 15:20:40,662 INFO L226 Difference]: Without dead ends: 331 [2018-07-23 15:20:40,663 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:20:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-23 15:20:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-23 15:20:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-23 15:20:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-23 15:20:40,666 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-23 15:20:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-23 15:20:40,666 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:20:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-23 15:20:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-23 15:20:40,667 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:40,667 INFO L353 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1, 1, 1] [2018-07-23 15:20:40,667 INFO L414 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash -268887245, now seen corresponding path program 162 times [2018-07-23 15:20:40,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:41,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:41,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:20:41,610 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:20:41,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:20:41,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:20:41,613 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 165 states. [2018-07-23 15:20:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:42,451 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2018-07-23 15:20:42,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:20:42,451 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 330 [2018-07-23 15:20:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:42,453 INFO L225 Difference]: With dead ends: 337 [2018-07-23 15:20:42,453 INFO L226 Difference]: Without dead ends: 333 [2018-07-23 15:20:42,454 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:20:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-23 15:20:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-23 15:20:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-23 15:20:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-23 15:20:42,459 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-23 15:20:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:42,460 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-23 15:20:42,460 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:20:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-23 15:20:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-23 15:20:42,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:42,461 INFO L353 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1, 1, 1] [2018-07-23 15:20:42,462 INFO L414 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash -786162897, now seen corresponding path program 163 times [2018-07-23 15:20:42,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:43,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:43,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-23 15:20:43,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-23 15:20:43,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-23 15:20:43,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:20:43,502 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 166 states. [2018-07-23 15:20:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:44,428 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-23 15:20:44,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-23 15:20:44,429 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 332 [2018-07-23 15:20:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:44,429 INFO L225 Difference]: With dead ends: 339 [2018-07-23 15:20:44,429 INFO L226 Difference]: Without dead ends: 335 [2018-07-23 15:20:44,430 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:20:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-23 15:20:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-23 15:20:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-23 15:20:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-23 15:20:44,435 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-23 15:20:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:44,435 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-23 15:20:44,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-23 15:20:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-23 15:20:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-23 15:20:44,437 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:44,437 INFO L353 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1, 1, 1] [2018-07-23 15:20:44,437 INFO L414 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash 328141867, now seen corresponding path program 164 times [2018-07-23 15:20:44,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:45,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:45,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-23 15:20:45,448 INFO L450 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-23 15:20:45,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-23 15:20:45,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:20:45,451 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 167 states. [2018-07-23 15:20:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:46,422 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-23 15:20:46,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:20:46,422 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 334 [2018-07-23 15:20:46,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:46,422 INFO L225 Difference]: With dead ends: 341 [2018-07-23 15:20:46,422 INFO L226 Difference]: Without dead ends: 337 [2018-07-23 15:20:46,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:20:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-23 15:20:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-23 15:20:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-23 15:20:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-23 15:20:46,427 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-23 15:20:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:46,427 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-23 15:20:46,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-23 15:20:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-23 15:20:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-23 15:20:46,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:46,428 INFO L353 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1, 1, 1] [2018-07-23 15:20:46,428 INFO L414 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1728163367, now seen corresponding path program 165 times [2018-07-23 15:20:46,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:47,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:47,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:20:47,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:20:47,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:20:47,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:20:47,367 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 168 states. [2018-07-23 15:20:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:48,408 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2018-07-23 15:20:48,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-23 15:20:48,409 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 336 [2018-07-23 15:20:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:48,409 INFO L225 Difference]: With dead ends: 343 [2018-07-23 15:20:48,409 INFO L226 Difference]: Without dead ends: 339 [2018-07-23 15:20:48,410 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:20:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-23 15:20:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-23 15:20:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-23 15:20:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-23 15:20:48,414 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-23 15:20:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:48,414 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-23 15:20:48,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:20:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-23 15:20:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-23 15:20:48,415 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:48,415 INFO L353 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1, 1, 1] [2018-07-23 15:20:48,415 INFO L414 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1470906077, now seen corresponding path program 166 times [2018-07-23 15:20:48,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:49,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:49,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:20:49,308 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:20:49,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:20:49,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:20:49,312 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 169 states. [2018-07-23 15:20:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:50,305 INFO L93 Difference]: Finished difference Result 345 states and 347 transitions. [2018-07-23 15:20:50,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:20:50,305 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 338 [2018-07-23 15:20:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:50,306 INFO L225 Difference]: With dead ends: 345 [2018-07-23 15:20:50,306 INFO L226 Difference]: Without dead ends: 341 [2018-07-23 15:20:50,307 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:20:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-23 15:20:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-23 15:20:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-23 15:20:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-23 15:20:50,310 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-23 15:20:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:50,311 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-23 15:20:50,311 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:20:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-23 15:20:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-23 15:20:50,311 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:50,312 INFO L353 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1, 1, 1] [2018-07-23 15:20:50,312 INFO L414 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash -580057825, now seen corresponding path program 167 times [2018-07-23 15:20:50,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:51,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:51,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-23 15:20:51,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-23 15:20:51,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-23 15:20:51,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:20:51,288 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 170 states. [2018-07-23 15:20:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:52,375 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-23 15:20:52,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-23 15:20:52,375 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 340 [2018-07-23 15:20:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:52,375 INFO L225 Difference]: With dead ends: 347 [2018-07-23 15:20:52,375 INFO L226 Difference]: Without dead ends: 343 [2018-07-23 15:20:52,377 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:20:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-23 15:20:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-23 15:20:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-23 15:20:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-23 15:20:52,380 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-23 15:20:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:52,380 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-23 15:20:52,380 INFO L472 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-23 15:20:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-23 15:20:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-23 15:20:52,381 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:52,381 INFO L353 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1, 1, 1] [2018-07-23 15:20:52,381 INFO L414 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash 826620443, now seen corresponding path program 168 times [2018-07-23 15:20:52,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:53,380 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:53,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-23 15:20:53,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-23 15:20:53,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-23 15:20:53,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:20:53,383 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 171 states. [2018-07-23 15:20:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:54,464 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2018-07-23 15:20:54,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:20:54,464 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 342 [2018-07-23 15:20:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:54,465 INFO L225 Difference]: With dead ends: 349 [2018-07-23 15:20:54,465 INFO L226 Difference]: Without dead ends: 345 [2018-07-23 15:20:54,466 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:20:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-23 15:20:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-23 15:20:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-23 15:20:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-23 15:20:54,469 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-23 15:20:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:54,469 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-23 15:20:54,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-23 15:20:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-23 15:20:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-23 15:20:54,470 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:54,470 INFO L353 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1, 1, 1] [2018-07-23 15:20:54,470 INFO L414 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash -270262249, now seen corresponding path program 169 times [2018-07-23 15:20:54,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:55,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:55,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:20:55,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:20:55,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:20:55,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:20:55,454 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 172 states. [2018-07-23 15:20:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:56,519 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2018-07-23 15:20:56,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-23 15:20:56,519 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 344 [2018-07-23 15:20:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:56,520 INFO L225 Difference]: With dead ends: 351 [2018-07-23 15:20:56,520 INFO L226 Difference]: Without dead ends: 347 [2018-07-23 15:20:56,521 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:20:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-23 15:20:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-23 15:20:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-23 15:20:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-23 15:20:56,524 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-23 15:20:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:56,525 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-23 15:20:56,525 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:20:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-23 15:20:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-23 15:20:56,526 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:56,526 INFO L353 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1, 1, 1] [2018-07-23 15:20:56,526 INFO L414 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash -2107541741, now seen corresponding path program 170 times [2018-07-23 15:20:56,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:57,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:57,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:20:57,557 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:20:57,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:20:57,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:20:57,563 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 173 states. [2018-07-23 15:20:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:58,555 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-23 15:20:58,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:20:58,555 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 346 [2018-07-23 15:20:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:58,556 INFO L225 Difference]: With dead ends: 353 [2018-07-23 15:20:58,556 INFO L226 Difference]: Without dead ends: 349 [2018-07-23 15:20:58,557 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:20:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-23 15:20:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-23 15:20:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-23 15:20:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-23 15:20:58,560 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-23 15:20:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:58,560 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-23 15:20:58,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:20:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-23 15:20:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-23 15:20:58,561 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:58,562 INFO L353 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1, 1, 1] [2018-07-23 15:20:58,562 INFO L414 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:58,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1793392399, now seen corresponding path program 171 times [2018-07-23 15:20:58,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:59,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:59,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-23 15:20:59,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-23 15:20:59,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-23 15:20:59,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:20:59,741 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 174 states. [2018-07-23 15:21:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:00,394 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-23 15:21:00,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-23 15:21:00,394 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 348 [2018-07-23 15:21:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:00,395 INFO L225 Difference]: With dead ends: 355 [2018-07-23 15:21:00,395 INFO L226 Difference]: Without dead ends: 351 [2018-07-23 15:21:00,396 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:21:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-23 15:21:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-23 15:21:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-23 15:21:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-23 15:21:00,402 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-23 15:21:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:00,402 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-23 15:21:00,402 INFO L472 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-23 15:21:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-23 15:21:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-23 15:21:00,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:00,404 INFO L353 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1, 1, 1] [2018-07-23 15:21:00,404 INFO L414 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1084651531, now seen corresponding path program 172 times [2018-07-23 15:21:00,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:01,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:01,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-23 15:21:01,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-23 15:21:01,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-23 15:21:01,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:21:01,632 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 175 states. [2018-07-23 15:21:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:02,025 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-07-23 15:21:02,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:21:02,025 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 350 [2018-07-23 15:21:02,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:02,026 INFO L225 Difference]: With dead ends: 357 [2018-07-23 15:21:02,026 INFO L226 Difference]: Without dead ends: 353 [2018-07-23 15:21:02,028 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:21:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-23 15:21:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-23 15:21:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-23 15:21:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-23 15:21:02,031 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-23 15:21:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:02,031 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-23 15:21:02,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-23 15:21:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-23 15:21:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-23 15:21:02,032 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:02,032 INFO L353 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1, 1, 1] [2018-07-23 15:21:02,032 INFO L414 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1410489849, now seen corresponding path program 173 times [2018-07-23 15:21:02,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:03,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:03,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:21:03,096 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:21:03,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:21:03,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:21:03,099 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 176 states. [2018-07-23 15:21:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:04,023 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2018-07-23 15:21:04,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-23 15:21:04,023 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 352 [2018-07-23 15:21:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:04,024 INFO L225 Difference]: With dead ends: 359 [2018-07-23 15:21:04,024 INFO L226 Difference]: Without dead ends: 355 [2018-07-23 15:21:04,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:21:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-23 15:21:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-23 15:21:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-23 15:21:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-23 15:21:04,030 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-23 15:21:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:04,031 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-23 15:21:04,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:21:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-23 15:21:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 15:21:04,032 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:04,032 INFO L353 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1, 1, 1] [2018-07-23 15:21:04,033 INFO L414 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:04,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1645362435, now seen corresponding path program 174 times [2018-07-23 15:21:04,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:05,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:05,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:21:05,089 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:21:05,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:21:05,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:21:05,092 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 177 states. [2018-07-23 15:21:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:06,328 INFO L93 Difference]: Finished difference Result 361 states and 363 transitions. [2018-07-23 15:21:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:21:06,328 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 354 [2018-07-23 15:21:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:06,329 INFO L225 Difference]: With dead ends: 361 [2018-07-23 15:21:06,329 INFO L226 Difference]: Without dead ends: 357 [2018-07-23 15:21:06,331 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:21:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-23 15:21:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-23 15:21:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-23 15:21:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-23 15:21:06,336 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-23 15:21:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:06,336 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-23 15:21:06,336 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:21:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-23 15:21:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-23 15:21:06,338 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:06,338 INFO L353 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1, 1, 1] [2018-07-23 15:21:06,338 INFO L414 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash 561776895, now seen corresponding path program 175 times [2018-07-23 15:21:06,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:07,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:07,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-23 15:21:07,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-23 15:21:07,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-23 15:21:07,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:21:07,458 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 178 states. [2018-07-23 15:21:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:08,072 INFO L93 Difference]: Finished difference Result 363 states and 365 transitions. [2018-07-23 15:21:08,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-23 15:21:08,073 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 356 [2018-07-23 15:21:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:08,073 INFO L225 Difference]: With dead ends: 363 [2018-07-23 15:21:08,073 INFO L226 Difference]: Without dead ends: 359 [2018-07-23 15:21:08,074 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:21:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-23 15:21:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-23 15:21:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-23 15:21:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-23 15:21:08,077 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-23 15:21:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:08,077 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-23 15:21:08,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-23 15:21:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-23 15:21:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-23 15:21:08,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:08,079 INFO L353 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1, 1, 1] [2018-07-23 15:21:08,079 INFO L414 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1381841413, now seen corresponding path program 176 times [2018-07-23 15:21:08,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:09,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:09,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-23 15:21:09,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-23 15:21:09,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-23 15:21:09,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:21:09,192 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 179 states. [2018-07-23 15:21:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:09,843 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2018-07-23 15:21:09,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:21:09,844 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 358 [2018-07-23 15:21:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:09,844 INFO L225 Difference]: With dead ends: 365 [2018-07-23 15:21:09,844 INFO L226 Difference]: Without dead ends: 361 [2018-07-23 15:21:09,845 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:21:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-23 15:21:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-23 15:21:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-23 15:21:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-23 15:21:09,849 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-23 15:21:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:09,849 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-23 15:21:09,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-23 15:21:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-23 15:21:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-23 15:21:09,850 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:09,850 INFO L353 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1, 1, 1] [2018-07-23 15:21:09,850 INFO L414 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:09,851 INFO L82 PathProgramCache]: Analyzing trace with hash -888261641, now seen corresponding path program 177 times [2018-07-23 15:21:09,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:10,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:10,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:21:10,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:21:10,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:21:10,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:21:10,972 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 180 states. [2018-07-23 15:21:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:12,156 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-23 15:21:12,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-23 15:21:12,156 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 360 [2018-07-23 15:21:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:12,157 INFO L225 Difference]: With dead ends: 367 [2018-07-23 15:21:12,157 INFO L226 Difference]: Without dead ends: 363 [2018-07-23 15:21:12,158 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:21:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-23 15:21:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-23 15:21:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-23 15:21:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-23 15:21:12,161 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-23 15:21:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:12,162 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-23 15:21:12,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:21:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-23 15:21:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-23 15:21:12,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:12,163 INFO L353 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1, 1, 1] [2018-07-23 15:21:12,163 INFO L414 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash 995496691, now seen corresponding path program 178 times [2018-07-23 15:21:12,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:13,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:13,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:21:13,367 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:21:13,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:21:13,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:21:13,370 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 181 states. [2018-07-23 15:21:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:13,886 INFO L93 Difference]: Finished difference Result 369 states and 371 transitions. [2018-07-23 15:21:13,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:21:13,886 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 362 [2018-07-23 15:21:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:13,887 INFO L225 Difference]: With dead ends: 369 [2018-07-23 15:21:13,887 INFO L226 Difference]: Without dead ends: 365 [2018-07-23 15:21:13,889 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:21:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-23 15:21:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-23 15:21:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-23 15:21:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-23 15:21:13,892 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-23 15:21:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:13,893 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-23 15:21:13,893 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:21:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-23 15:21:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-23 15:21:13,894 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:13,894 INFO L353 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1, 1, 1] [2018-07-23 15:21:13,894 INFO L414 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1188945169, now seen corresponding path program 179 times [2018-07-23 15:21:13,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:15,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:15,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-23 15:21:15,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-23 15:21:15,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-23 15:21:15,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:21:15,151 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 182 states. [2018-07-23 15:21:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:16,575 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2018-07-23 15:21:16,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-23 15:21:16,575 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 364 [2018-07-23 15:21:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:16,576 INFO L225 Difference]: With dead ends: 371 [2018-07-23 15:21:16,576 INFO L226 Difference]: Without dead ends: 367 [2018-07-23 15:21:16,577 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:21:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-23 15:21:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-23 15:21:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-23 15:21:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-23 15:21:16,580 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-23 15:21:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:16,581 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-23 15:21:16,581 INFO L472 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-23 15:21:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-23 15:21:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-23 15:21:16,582 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:16,582 INFO L353 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1, 1, 1] [2018-07-23 15:21:16,582 INFO L414 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:16,582 INFO L82 PathProgramCache]: Analyzing trace with hash -198564885, now seen corresponding path program 180 times [2018-07-23 15:21:16,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:17,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:17,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-23 15:21:17,664 INFO L450 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-23 15:21:17,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-23 15:21:17,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:21:17,668 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 183 states. [2018-07-23 15:21:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:18,238 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2018-07-23 15:21:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:21:18,238 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 366 [2018-07-23 15:21:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:18,239 INFO L225 Difference]: With dead ends: 373 [2018-07-23 15:21:18,239 INFO L226 Difference]: Without dead ends: 369 [2018-07-23 15:21:18,240 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:21:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-23 15:21:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-23 15:21:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-23 15:21:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-23 15:21:18,244 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-23 15:21:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:18,244 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-23 15:21:18,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-23 15:21:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-23 15:21:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-23 15:21:18,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:18,245 INFO L353 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1, 1, 1] [2018-07-23 15:21:18,245 INFO L414 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1925851673, now seen corresponding path program 181 times [2018-07-23 15:21:18,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:19,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:19,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:21:19,446 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:21:19,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:21:19,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:21:19,450 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 184 states. [2018-07-23 15:21:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:20,911 INFO L93 Difference]: Finished difference Result 375 states and 377 transitions. [2018-07-23 15:21:20,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-23 15:21:20,911 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 368 [2018-07-23 15:21:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:20,912 INFO L225 Difference]: With dead ends: 375 [2018-07-23 15:21:20,912 INFO L226 Difference]: Without dead ends: 371 [2018-07-23 15:21:20,913 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:21:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-23 15:21:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-23 15:21:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-23 15:21:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-23 15:21:20,916 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-23 15:21:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:20,917 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-23 15:21:20,917 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:21:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-23 15:21:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-23 15:21:20,918 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:20,918 INFO L353 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1, 1, 1] [2018-07-23 15:21:20,918 INFO L414 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 303888611, now seen corresponding path program 182 times [2018-07-23 15:21:20,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:22,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:22,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:21:22,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:21:22,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:21:22,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:21:22,169 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 185 states. [2018-07-23 15:21:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:22,618 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-23 15:21:22,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:21:22,619 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 370 [2018-07-23 15:21:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:22,619 INFO L225 Difference]: With dead ends: 377 [2018-07-23 15:21:22,619 INFO L226 Difference]: Without dead ends: 373 [2018-07-23 15:21:22,621 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:21:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-23 15:21:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-23 15:21:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-23 15:21:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-23 15:21:22,624 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-23 15:21:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:22,624 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-23 15:21:22,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:21:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-23 15:21:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-23 15:21:22,625 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:22,625 INFO L353 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1, 1, 1] [2018-07-23 15:21:22,625 INFO L414 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash -104379169, now seen corresponding path program 183 times [2018-07-23 15:21:22,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:23,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:23,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-23 15:21:23,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-23 15:21:23,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-23 15:21:23,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:21:23,839 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 186 states. [2018-07-23 15:21:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:25,371 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-23 15:21:25,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-23 15:21:25,371 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 372 [2018-07-23 15:21:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:25,371 INFO L225 Difference]: With dead ends: 379 [2018-07-23 15:21:25,372 INFO L226 Difference]: Without dead ends: 375 [2018-07-23 15:21:25,373 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:21:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-23 15:21:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-23 15:21:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-23 15:21:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-23 15:21:25,376 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-23 15:21:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:25,377 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-23 15:21:25,377 INFO L472 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-23 15:21:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-23 15:21:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-23 15:21:25,378 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:25,378 INFO L353 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1, 1, 1] [2018-07-23 15:21:25,378 INFO L414 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:25,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1607691813, now seen corresponding path program 184 times [2018-07-23 15:21:25,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:26,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:26,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-23 15:21:26,658 INFO L450 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-23 15:21:26,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-23 15:21:26,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:21:26,661 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 187 states. [2018-07-23 15:21:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:27,302 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2018-07-23 15:21:27,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:21:27,302 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 374 [2018-07-23 15:21:27,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:27,303 INFO L225 Difference]: With dead ends: 381 [2018-07-23 15:21:27,303 INFO L226 Difference]: Without dead ends: 377 [2018-07-23 15:21:27,304 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:21:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-23 15:21:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-23 15:21:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-23 15:21:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-23 15:21:27,307 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-23 15:21:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:27,308 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-23 15:21:27,308 INFO L472 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-23 15:21:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-23 15:21:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-23 15:21:27,309 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:27,309 INFO L353 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1, 1, 1] [2018-07-23 15:21:27,309 INFO L414 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1112836055, now seen corresponding path program 185 times [2018-07-23 15:21:27,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:28,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:28,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:21:28,567 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:21:28,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:21:28,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:21:28,571 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 188 states. [2018-07-23 15:21:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:29,500 INFO L93 Difference]: Finished difference Result 383 states and 385 transitions. [2018-07-23 15:21:29,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-23 15:21:29,500 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 376 [2018-07-23 15:21:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:29,500 INFO L225 Difference]: With dead ends: 383 [2018-07-23 15:21:29,500 INFO L226 Difference]: Without dead ends: 379 [2018-07-23 15:21:29,502 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:21:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-23 15:21:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-23 15:21:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-23 15:21:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-23 15:21:29,506 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-23 15:21:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:29,506 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-23 15:21:29,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:21:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-23 15:21:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-23 15:21:29,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:29,508 INFO L353 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1, 1, 1] [2018-07-23 15:21:29,508 INFO L414 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash -94966061, now seen corresponding path program 186 times [2018-07-23 15:21:29,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:30,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:30,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:21:30,814 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:21:30,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:21:30,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:21:30,818 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 189 states. [2018-07-23 15:21:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:32,443 INFO L93 Difference]: Finished difference Result 385 states and 387 transitions. [2018-07-23 15:21:32,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:21:32,443 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 378 [2018-07-23 15:21:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:32,444 INFO L225 Difference]: With dead ends: 385 [2018-07-23 15:21:32,444 INFO L226 Difference]: Without dead ends: 381 [2018-07-23 15:21:32,445 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:21:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-23 15:21:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-23 15:21:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-23 15:21:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-23 15:21:32,449 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-23 15:21:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:32,449 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-23 15:21:32,449 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:21:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-23 15:21:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-23 15:21:32,450 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:32,450 INFO L353 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1, 1, 1] [2018-07-23 15:21:32,450 INFO L414 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1151629617, now seen corresponding path program 187 times [2018-07-23 15:21:32,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:33,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:33,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-23 15:21:33,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-23 15:21:33,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-23 15:21:33,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:21:33,730 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 190 states. [2018-07-23 15:21:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:34,683 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-23 15:21:34,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-23 15:21:34,684 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 380 [2018-07-23 15:21:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:34,684 INFO L225 Difference]: With dead ends: 387 [2018-07-23 15:21:34,684 INFO L226 Difference]: Without dead ends: 383 [2018-07-23 15:21:34,686 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:21:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-23 15:21:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-23 15:21:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-23 15:21:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-23 15:21:34,689 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-23 15:21:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:34,689 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-23 15:21:34,689 INFO L472 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-23 15:21:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-23 15:21:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-23 15:21:34,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:34,691 INFO L353 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1, 1, 1] [2018-07-23 15:21:34,691 INFO L414 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:34,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1301942219, now seen corresponding path program 188 times [2018-07-23 15:21:34,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:36,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:36,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-23 15:21:36,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-23 15:21:36,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-23 15:21:36,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:21:36,027 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 191 states. [2018-07-23 15:21:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:36,477 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2018-07-23 15:21:36,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:21:36,477 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 382 [2018-07-23 15:21:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:36,477 INFO L225 Difference]: With dead ends: 389 [2018-07-23 15:21:36,477 INFO L226 Difference]: Without dead ends: 385 [2018-07-23 15:21:36,479 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:21:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-23 15:21:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-23 15:21:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-23 15:21:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-23 15:21:36,482 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-23 15:21:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:36,482 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-23 15:21:36,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-23 15:21:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-23 15:21:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-23 15:21:36,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:36,484 INFO L353 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1, 1, 1] [2018-07-23 15:21:36,484 INFO L414 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1247431111, now seen corresponding path program 189 times [2018-07-23 15:21:36,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:37,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:37,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:21:37,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:21:37,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:21:37,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:21:37,813 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 192 states. [2018-07-23 15:21:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:38,877 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2018-07-23 15:21:38,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-23 15:21:38,877 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 384 [2018-07-23 15:21:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:38,878 INFO L225 Difference]: With dead ends: 391 [2018-07-23 15:21:38,878 INFO L226 Difference]: Without dead ends: 387 [2018-07-23 15:21:38,881 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:21:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-23 15:21:38,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-23 15:21:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-23 15:21:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-23 15:21:38,887 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-23 15:21:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:38,887 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-23 15:21:38,887 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:21:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-23 15:21:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-23 15:21:38,888 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:38,888 INFO L353 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1, 1, 1] [2018-07-23 15:21:38,888 INFO L414 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash 401863875, now seen corresponding path program 190 times [2018-07-23 15:21:38,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:40,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:40,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:21:40,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:21:40,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:21:40,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:21:40,302 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 193 states. [2018-07-23 15:21:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:41,890 INFO L93 Difference]: Finished difference Result 393 states and 395 transitions. [2018-07-23 15:21:41,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:21:41,890 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 386 [2018-07-23 15:21:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:41,891 INFO L225 Difference]: With dead ends: 393 [2018-07-23 15:21:41,891 INFO L226 Difference]: Without dead ends: 389 [2018-07-23 15:21:41,893 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:21:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-23 15:21:41,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-23 15:21:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-23 15:21:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-23 15:21:41,897 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-23 15:21:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:41,898 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-23 15:21:41,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:21:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-23 15:21:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-23 15:21:41,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:41,899 INFO L353 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1, 1, 1] [2018-07-23 15:21:41,899 INFO L414 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash -439430977, now seen corresponding path program 191 times [2018-07-23 15:21:41,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:43,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:43,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-23 15:21:43,386 INFO L450 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-23 15:21:43,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-23 15:21:43,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:21:43,393 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 194 states. [2018-07-23 15:21:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:45,726 INFO L93 Difference]: Finished difference Result 395 states and 397 transitions. [2018-07-23 15:21:45,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-23 15:21:45,727 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 388 [2018-07-23 15:21:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:45,728 INFO L225 Difference]: With dead ends: 395 [2018-07-23 15:21:45,728 INFO L226 Difference]: Without dead ends: 391 [2018-07-23 15:21:45,730 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:21:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-23 15:21:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-23 15:21:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-23 15:21:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-23 15:21:45,734 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-23 15:21:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:45,735 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-23 15:21:45,735 INFO L472 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-23 15:21:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-23 15:21:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-23 15:21:45,737 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:45,737 INFO L353 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1, 1, 1] [2018-07-23 15:21:45,737 INFO L414 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1469932101, now seen corresponding path program 192 times [2018-07-23 15:21:45,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:47,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:47,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-23 15:21:47,137 INFO L450 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-23 15:21:47,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-23 15:21:47,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:21:47,142 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 195 states. [2018-07-23 15:21:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:48,822 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2018-07-23 15:21:48,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:21:48,822 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 390 [2018-07-23 15:21:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:48,823 INFO L225 Difference]: With dead ends: 397 [2018-07-23 15:21:48,823 INFO L226 Difference]: Without dead ends: 393 [2018-07-23 15:21:48,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:21:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-23 15:21:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-23 15:21:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-23 15:21:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-23 15:21:48,828 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-23 15:21:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:48,828 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-23 15:21:48,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-23 15:21:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-23 15:21:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-23 15:21:48,829 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:48,829 INFO L353 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1, 1, 1] [2018-07-23 15:21:48,829 INFO L414 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash 355933111, now seen corresponding path program 193 times [2018-07-23 15:21:48,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:50,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:50,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:21:50,268 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:21:50,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:21:50,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:21:50,270 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 196 states. [2018-07-23 15:21:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:51,585 INFO L93 Difference]: Finished difference Result 399 states and 401 transitions. [2018-07-23 15:21:51,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-23 15:21:51,585 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 392 [2018-07-23 15:21:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:51,586 INFO L225 Difference]: With dead ends: 399 [2018-07-23 15:21:51,586 INFO L226 Difference]: Without dead ends: 395 [2018-07-23 15:21:51,587 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:21:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-23 15:21:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-23 15:21:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-23 15:21:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-23 15:21:51,590 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-23 15:21:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:51,590 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-23 15:21:51,590 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:21:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-23 15:21:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-23 15:21:51,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:51,591 INFO L353 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1, 1, 1] [2018-07-23 15:21:51,592 INFO L414 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1629222221, now seen corresponding path program 194 times [2018-07-23 15:21:51,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:52,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:52,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:21:52,968 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:21:52,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:21:52,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:21:52,972 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 197 states. [2018-07-23 15:21:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:54,269 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2018-07-23 15:21:54,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:21:54,269 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 394 [2018-07-23 15:21:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:54,270 INFO L225 Difference]: With dead ends: 401 [2018-07-23 15:21:54,270 INFO L226 Difference]: Without dead ends: 397 [2018-07-23 15:21:54,272 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:21:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-23 15:21:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-23 15:21:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-23 15:21:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-23 15:21:54,276 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-23 15:21:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:54,276 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-23 15:21:54,276 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:21:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-23 15:21:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-23 15:21:54,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:54,277 INFO L353 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1, 1, 1] [2018-07-23 15:21:54,277 INFO L414 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1896950447, now seen corresponding path program 195 times [2018-07-23 15:21:54,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:55,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:55,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-23 15:21:55,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-23 15:21:55,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-23 15:21:55,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:21:55,757 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 198 states. [2018-07-23 15:21:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:21:57,057 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-23 15:21:57,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-23 15:21:57,057 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 396 [2018-07-23 15:21:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:21:57,058 INFO L225 Difference]: With dead ends: 403 [2018-07-23 15:21:57,058 INFO L226 Difference]: Without dead ends: 399 [2018-07-23 15:21:57,059 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:21:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-23 15:21:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-23 15:21:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-23 15:21:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-23 15:21:57,063 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-23 15:21:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:21:57,063 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-23 15:21:57,063 INFO L472 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-23 15:21:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-23 15:21:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-23 15:21:57,064 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:21:57,064 INFO L353 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1, 1, 1] [2018-07-23 15:21:57,064 INFO L414 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:21:57,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1819687851, now seen corresponding path program 196 times [2018-07-23 15:21:57,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:21:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:21:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:21:58,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:21:58,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-23 15:21:58,482 INFO L450 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-23 15:21:58,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-23 15:21:58,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:21:58,487 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 199 states. [2018-07-23 15:22:00,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:00,077 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2018-07-23 15:22:00,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:22:00,077 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 398 [2018-07-23 15:22:00,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:00,078 INFO L225 Difference]: With dead ends: 405 [2018-07-23 15:22:00,079 INFO L226 Difference]: Without dead ends: 401 [2018-07-23 15:22:00,081 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:22:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-23 15:22:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-23 15:22:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-23 15:22:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-23 15:22:00,084 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-23 15:22:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:00,085 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-23 15:22:00,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-23 15:22:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-23 15:22:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-23 15:22:00,086 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:00,086 INFO L353 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1, 1, 1] [2018-07-23 15:22:00,086 INFO L414 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:00,086 INFO L82 PathProgramCache]: Analyzing trace with hash 584777127, now seen corresponding path program 197 times [2018-07-23 15:22:00,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:01,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:01,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:22:01,622 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:22:01,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:22:01,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:22:01,626 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 200 states. [2018-07-23 15:22:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:03,471 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2018-07-23 15:22:03,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-23 15:22:03,471 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 400 [2018-07-23 15:22:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:03,472 INFO L225 Difference]: With dead ends: 407 [2018-07-23 15:22:03,472 INFO L226 Difference]: Without dead ends: 403 [2018-07-23 15:22:03,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:22:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-23 15:22:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-23 15:22:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-23 15:22:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-23 15:22:03,477 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-23 15:22:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:03,477 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-23 15:22:03,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:22:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-23 15:22:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-23 15:22:03,478 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:03,478 INFO L353 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1, 1, 1] [2018-07-23 15:22:03,478 INFO L414 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:03,478 INFO L82 PathProgramCache]: Analyzing trace with hash -753454941, now seen corresponding path program 198 times [2018-07-23 15:22:03,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:04,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:04,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:22:04,962 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:22:04,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:22:04,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:22:04,966 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 201 states. [2018-07-23 15:22:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:07,056 INFO L93 Difference]: Finished difference Result 409 states and 411 transitions. [2018-07-23 15:22:07,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:22:07,057 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 402 [2018-07-23 15:22:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:07,057 INFO L225 Difference]: With dead ends: 409 [2018-07-23 15:22:07,058 INFO L226 Difference]: Without dead ends: 405 [2018-07-23 15:22:07,060 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:22:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-23 15:22:07,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-23 15:22:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-23 15:22:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-23 15:22:07,063 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-23 15:22:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:07,064 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-23 15:22:07,064 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:22:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-23 15:22:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-23 15:22:07,065 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:07,065 INFO L353 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1, 1, 1] [2018-07-23 15:22:07,065 INFO L414 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1695716511, now seen corresponding path program 199 times [2018-07-23 15:22:07,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:08,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:08,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-23 15:22:08,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-23 15:22:08,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-23 15:22:08,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:22:08,479 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 202 states. [2018-07-23 15:22:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:10,323 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2018-07-23 15:22:10,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-23 15:22:10,323 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 404 [2018-07-23 15:22:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:10,324 INFO L225 Difference]: With dead ends: 411 [2018-07-23 15:22:10,324 INFO L226 Difference]: Without dead ends: 407 [2018-07-23 15:22:10,326 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:22:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-23 15:22:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-23 15:22:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-23 15:22:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-23 15:22:10,329 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-23 15:22:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:10,329 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-23 15:22:10,329 INFO L472 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-23 15:22:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-23 15:22:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-23 15:22:10,331 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:10,331 INFO L353 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1, 1, 1] [2018-07-23 15:22:10,331 INFO L414 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:10,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1707403675, now seen corresponding path program 200 times [2018-07-23 15:22:10,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:11,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:11,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-23 15:22:11,905 INFO L450 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-23 15:22:11,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-23 15:22:11,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:22:11,908 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 203 states. [2018-07-23 15:22:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:13,014 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-07-23 15:22:13,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:22:13,015 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 406 [2018-07-23 15:22:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:13,015 INFO L225 Difference]: With dead ends: 413 [2018-07-23 15:22:13,016 INFO L226 Difference]: Without dead ends: 409 [2018-07-23 15:22:13,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:22:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-23 15:22:13,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-23 15:22:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-23 15:22:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-23 15:22:13,022 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-23 15:22:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:13,023 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-23 15:22:13,023 INFO L472 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-23 15:22:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-23 15:22:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-23 15:22:13,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:13,024 INFO L353 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1, 1, 1] [2018-07-23 15:22:13,025 INFO L414 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:13,025 INFO L82 PathProgramCache]: Analyzing trace with hash 53866391, now seen corresponding path program 201 times [2018-07-23 15:22:13,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:14,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:14,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:22:14,551 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:22:14,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:22:14,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:22:14,555 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 204 states. [2018-07-23 15:22:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:15,153 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2018-07-23 15:22:15,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-23 15:22:15,153 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 408 [2018-07-23 15:22:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:15,154 INFO L225 Difference]: With dead ends: 415 [2018-07-23 15:22:15,154 INFO L226 Difference]: Without dead ends: 411 [2018-07-23 15:22:15,156 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:22:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-23 15:22:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-23 15:22:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-23 15:22:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-23 15:22:15,160 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-23 15:22:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:15,160 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-23 15:22:15,160 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:22:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-23 15:22:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-23 15:22:15,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:15,162 INFO L353 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1, 1, 1] [2018-07-23 15:22:15,162 INFO L414 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash 142435987, now seen corresponding path program 202 times [2018-07-23 15:22:15,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:16,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:16,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:22:16,787 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:22:16,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:22:16,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:22:16,791 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 205 states. [2018-07-23 15:22:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:18,441 INFO L93 Difference]: Finished difference Result 417 states and 419 transitions. [2018-07-23 15:22:18,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:22:18,441 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 410 [2018-07-23 15:22:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:18,442 INFO L225 Difference]: With dead ends: 417 [2018-07-23 15:22:18,442 INFO L226 Difference]: Without dead ends: 413 [2018-07-23 15:22:18,443 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:22:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-23 15:22:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-23 15:22:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-23 15:22:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-23 15:22:18,447 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-23 15:22:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:18,447 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-23 15:22:18,447 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:22:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-23 15:22:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-23 15:22:18,449 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:18,449 INFO L353 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1, 1, 1] [2018-07-23 15:22:18,449 INFO L414 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:18,449 INFO L82 PathProgramCache]: Analyzing trace with hash -641528177, now seen corresponding path program 203 times [2018-07-23 15:22:18,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:20,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:20,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-23 15:22:20,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-23 15:22:20,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-23 15:22:20,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:22:20,067 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 206 states. [2018-07-23 15:22:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:22,861 INFO L93 Difference]: Finished difference Result 419 states and 421 transitions. [2018-07-23 15:22:22,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-23 15:22:22,862 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 412 [2018-07-23 15:22:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:22,862 INFO L225 Difference]: With dead ends: 419 [2018-07-23 15:22:22,862 INFO L226 Difference]: Without dead ends: 415 [2018-07-23 15:22:22,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:22:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-23 15:22:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-23 15:22:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-23 15:22:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-23 15:22:22,868 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-23 15:22:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:22,869 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-23 15:22:22,869 INFO L472 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-23 15:22:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-23 15:22:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-23 15:22:22,870 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:22,870 INFO L353 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1, 1, 1] [2018-07-23 15:22:22,870 INFO L414 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:22,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1883154315, now seen corresponding path program 204 times [2018-07-23 15:22:22,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:24,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:24,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-23 15:22:24,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-23 15:22:24,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-23 15:22:24,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:22:24,586 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 207 states. [2018-07-23 15:22:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:25,507 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2018-07-23 15:22:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:22:25,507 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 414 [2018-07-23 15:22:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:25,508 INFO L225 Difference]: With dead ends: 421 [2018-07-23 15:22:25,508 INFO L226 Difference]: Without dead ends: 417 [2018-07-23 15:22:25,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:22:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-23 15:22:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-23 15:22:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-23 15:22:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-23 15:22:25,515 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-23 15:22:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:25,515 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-23 15:22:25,515 INFO L472 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-23 15:22:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-23 15:22:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-23 15:22:25,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:25,516 INFO L353 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1, 1, 1] [2018-07-23 15:22:25,516 INFO L414 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1446506887, now seen corresponding path program 205 times [2018-07-23 15:22:25,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:27,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:27,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:22:27,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:22:27,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:22:27,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:22:27,441 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 208 states. [2018-07-23 15:22:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:29,420 INFO L93 Difference]: Finished difference Result 423 states and 425 transitions. [2018-07-23 15:22:29,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-23 15:22:29,420 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 416 [2018-07-23 15:22:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:29,421 INFO L225 Difference]: With dead ends: 423 [2018-07-23 15:22:29,421 INFO L226 Difference]: Without dead ends: 419 [2018-07-23 15:22:29,422 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:22:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-23 15:22:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-23 15:22:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-23 15:22:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-23 15:22:29,426 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-23 15:22:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:29,427 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-23 15:22:29,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:22:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-23 15:22:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-23 15:22:29,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:29,428 INFO L353 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1, 1, 1] [2018-07-23 15:22:29,428 INFO L414 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1559843709, now seen corresponding path program 206 times [2018-07-23 15:22:29,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:31,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:31,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:22:31,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:22:31,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:22:31,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:22:31,292 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 209 states. [2018-07-23 15:22:33,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:33,519 INFO L93 Difference]: Finished difference Result 425 states and 427 transitions. [2018-07-23 15:22:33,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:22:33,520 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 418 [2018-07-23 15:22:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:33,520 INFO L225 Difference]: With dead ends: 425 [2018-07-23 15:22:33,520 INFO L226 Difference]: Without dead ends: 421 [2018-07-23 15:22:33,522 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:22:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-23 15:22:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-23 15:22:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-23 15:22:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-23 15:22:33,526 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-23 15:22:33,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:33,526 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-23 15:22:33,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:22:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-23 15:22:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-23 15:22:33,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:33,527 INFO L353 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1, 1, 1] [2018-07-23 15:22:33,527 INFO L414 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:33,528 INFO L82 PathProgramCache]: Analyzing trace with hash -149776257, now seen corresponding path program 207 times [2018-07-23 15:22:33,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:35,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:35,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-23 15:22:35,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-23 15:22:35,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-23 15:22:35,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:22:35,220 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 210 states. [2018-07-23 15:22:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:36,006 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-23 15:22:36,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-23 15:22:36,006 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 420 [2018-07-23 15:22:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:36,007 INFO L225 Difference]: With dead ends: 427 [2018-07-23 15:22:36,007 INFO L226 Difference]: Without dead ends: 423 [2018-07-23 15:22:36,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:22:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-23 15:22:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-23 15:22:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-23 15:22:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-23 15:22:36,013 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-23 15:22:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:36,013 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-23 15:22:36,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-23 15:22:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-23 15:22:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-23 15:22:36,014 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:36,014 INFO L353 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1, 1, 1] [2018-07-23 15:22:36,014 INFO L414 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2010346875, now seen corresponding path program 208 times [2018-07-23 15:22:36,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:37,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:37,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-23 15:22:37,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-23 15:22:37,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-23 15:22:37,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:22:37,754 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 211 states. [2018-07-23 15:22:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:40,034 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2018-07-23 15:22:40,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:22:40,034 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 422 [2018-07-23 15:22:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:40,035 INFO L225 Difference]: With dead ends: 429 [2018-07-23 15:22:40,035 INFO L226 Difference]: Without dead ends: 425 [2018-07-23 15:22:40,036 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:22:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-23 15:22:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-23 15:22:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-23 15:22:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-23 15:22:40,039 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-23 15:22:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:40,040 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-23 15:22:40,040 INFO L472 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-23 15:22:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-23 15:22:40,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-23 15:22:40,041 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:40,041 INFO L353 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1, 1, 1] [2018-07-23 15:22:40,041 INFO L414 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:40,041 INFO L82 PathProgramCache]: Analyzing trace with hash -875494537, now seen corresponding path program 209 times [2018-07-23 15:22:40,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:41,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:41,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:22:41,770 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:22:41,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:22:41,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:22:41,775 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 212 states. [2018-07-23 15:22:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:42,886 INFO L93 Difference]: Finished difference Result 431 states and 433 transitions. [2018-07-23 15:22:42,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-23 15:22:42,886 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 424 [2018-07-23 15:22:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:42,886 INFO L225 Difference]: With dead ends: 431 [2018-07-23 15:22:42,886 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:22:42,888 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:22:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:22:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-23 15:22:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-23 15:22:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-23 15:22:42,892 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-23 15:22:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:42,892 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-23 15:22:42,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:22:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-23 15:22:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-23 15:22:42,893 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:42,894 INFO L353 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1, 1, 1] [2018-07-23 15:22:42,894 INFO L414 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:42,894 INFO L82 PathProgramCache]: Analyzing trace with hash 379781747, now seen corresponding path program 210 times [2018-07-23 15:22:42,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:44,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:44,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:22:44,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:22:44,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:22:44,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:22:44,632 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 213 states. [2018-07-23 15:22:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:47,230 INFO L93 Difference]: Finished difference Result 433 states and 435 transitions. [2018-07-23 15:22:47,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:22:47,230 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 426 [2018-07-23 15:22:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:47,231 INFO L225 Difference]: With dead ends: 433 [2018-07-23 15:22:47,231 INFO L226 Difference]: Without dead ends: 429 [2018-07-23 15:22:47,232 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:22:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-23 15:22:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-23 15:22:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-23 15:22:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-23 15:22:47,236 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-23 15:22:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-23 15:22:47,237 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:22:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-23 15:22:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-23 15:22:47,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:47,238 INFO L353 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1, 1, 1] [2018-07-23 15:22:47,238 INFO L414 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash -185519505, now seen corresponding path program 211 times [2018-07-23 15:22:47,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:49,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:49,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-23 15:22:49,155 INFO L450 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-23 15:22:49,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-23 15:22:49,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:22:49,158 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 214 states. [2018-07-23 15:22:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:50,289 INFO L93 Difference]: Finished difference Result 435 states and 437 transitions. [2018-07-23 15:22:50,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-23 15:22:50,289 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 428 [2018-07-23 15:22:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:50,290 INFO L225 Difference]: With dead ends: 435 [2018-07-23 15:22:50,290 INFO L226 Difference]: Without dead ends: 431 [2018-07-23 15:22:50,292 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:22:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-23 15:22:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-23 15:22:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-23 15:22:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-23 15:22:50,298 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-23 15:22:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:50,298 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-23 15:22:50,298 INFO L472 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-23 15:22:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-23 15:22:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-23 15:22:50,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:50,299 INFO L353 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1, 1, 1] [2018-07-23 15:22:50,299 INFO L414 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2020823915, now seen corresponding path program 212 times [2018-07-23 15:22:50,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:52,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:52,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-23 15:22:52,228 INFO L450 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-23 15:22:52,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-23 15:22:52,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:22:52,234 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 215 states. [2018-07-23 15:22:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:54,186 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-23 15:22:54,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-23 15:22:54,186 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 430 [2018-07-23 15:22:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:54,187 INFO L225 Difference]: With dead ends: 437 [2018-07-23 15:22:54,187 INFO L226 Difference]: Without dead ends: 433 [2018-07-23 15:22:54,190 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:22:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-23 15:22:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-23 15:22:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-23 15:22:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-23 15:22:54,194 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 430 [2018-07-23 15:22:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:54,195 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-23 15:22:54,195 INFO L472 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-23 15:22:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-23 15:22:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-23 15:22:54,196 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:54,196 INFO L353 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1, 1, 1] [2018-07-23 15:22:54,196 INFO L414 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:54,196 INFO L82 PathProgramCache]: Analyzing trace with hash 603006311, now seen corresponding path program 213 times [2018-07-23 15:22:54,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:22:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:22:56,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:22:56,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-23 15:22:56,178 INFO L450 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-23 15:22:56,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-23 15:22:56,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:22:56,183 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 216 states. [2018-07-23 15:22:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:22:58,721 INFO L93 Difference]: Finished difference Result 439 states and 441 transitions. [2018-07-23 15:22:58,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-23 15:22:58,721 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 432 [2018-07-23 15:22:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:22:58,722 INFO L225 Difference]: With dead ends: 439 [2018-07-23 15:22:58,722 INFO L226 Difference]: Without dead ends: 435 [2018-07-23 15:22:58,724 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:22:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-23 15:22:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-23 15:22:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-23 15:22:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-23 15:22:58,729 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-23 15:22:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:22:58,729 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-23 15:22:58,729 INFO L472 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-23 15:22:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-23 15:22:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-23 15:22:58,730 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:22:58,730 INFO L353 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1, 1, 1] [2018-07-23 15:22:58,731 INFO L414 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:22:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash -415078301, now seen corresponding path program 214 times [2018-07-23 15:22:58,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:22:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:00,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:00,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-23 15:23:00,579 INFO L450 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-23 15:23:00,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-23 15:23:00,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:23:00,583 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 217 states. [2018-07-23 15:23:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:01,907 INFO L93 Difference]: Finished difference Result 441 states and 443 transitions. [2018-07-23 15:23:01,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:23:01,907 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 434 [2018-07-23 15:23:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:01,907 INFO L225 Difference]: With dead ends: 441 [2018-07-23 15:23:01,908 INFO L226 Difference]: Without dead ends: 437 [2018-07-23 15:23:01,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:23:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-23 15:23:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-23 15:23:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-23 15:23:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-23 15:23:01,913 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-23 15:23:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:01,913 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-23 15:23:01,913 INFO L472 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-23 15:23:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-23 15:23:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-23 15:23:01,914 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:01,914 INFO L353 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1, 1, 1] [2018-07-23 15:23:01,914 INFO L414 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash 458153055, now seen corresponding path program 215 times [2018-07-23 15:23:01,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:03,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:03,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-23 15:23:03,815 INFO L450 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-23 15:23:03,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-23 15:23:03,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:23:03,819 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 218 states. [2018-07-23 15:23:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:05,880 INFO L93 Difference]: Finished difference Result 443 states and 445 transitions. [2018-07-23 15:23:05,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-23 15:23:05,880 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 436 [2018-07-23 15:23:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:05,881 INFO L225 Difference]: With dead ends: 443 [2018-07-23 15:23:05,881 INFO L226 Difference]: Without dead ends: 439 [2018-07-23 15:23:05,881 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:23:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-23 15:23:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-23 15:23:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-23 15:23:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-07-23 15:23:05,885 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 436 [2018-07-23 15:23:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-07-23 15:23:05,886 INFO L472 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-23 15:23:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-07-23 15:23:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-23 15:23:05,887 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:05,887 INFO L353 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1, 1, 1] [2018-07-23 15:23:05,887 INFO L414 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2114863451, now seen corresponding path program 216 times [2018-07-23 15:23:05,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:07,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:07,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-23 15:23:07,849 INFO L450 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-23 15:23:07,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-23 15:23:07,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:23:07,854 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 219 states. [2018-07-23 15:23:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:10,672 INFO L93 Difference]: Finished difference Result 445 states and 447 transitions. [2018-07-23 15:23:10,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-23 15:23:10,673 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 438 [2018-07-23 15:23:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:10,673 INFO L225 Difference]: With dead ends: 445 [2018-07-23 15:23:10,673 INFO L226 Difference]: Without dead ends: 441 [2018-07-23 15:23:10,675 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:23:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-23 15:23:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-23 15:23:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-23 15:23:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-23 15:23:10,679 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 438 [2018-07-23 15:23:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:10,679 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-23 15:23:10,679 INFO L472 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-23 15:23:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-23 15:23:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-23 15:23:10,681 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:10,681 INFO L353 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1, 1, 1] [2018-07-23 15:23:10,681 INFO L414 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 780687191, now seen corresponding path program 217 times [2018-07-23 15:23:10,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:12,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:12,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-23 15:23:12,633 INFO L450 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-23 15:23:12,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-23 15:23:12,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:23:12,638 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 220 states. [2018-07-23 15:23:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:14,615 INFO L93 Difference]: Finished difference Result 447 states and 449 transitions. [2018-07-23 15:23:14,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-23 15:23:14,615 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 440 [2018-07-23 15:23:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:14,615 INFO L225 Difference]: With dead ends: 447 [2018-07-23 15:23:14,615 INFO L226 Difference]: Without dead ends: 443 [2018-07-23 15:23:14,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:23:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-23 15:23:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-23 15:23:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-23 15:23:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-23 15:23:14,621 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 440 [2018-07-23 15:23:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:14,622 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-23 15:23:14,622 INFO L472 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-23 15:23:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-23 15:23:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-23 15:23:14,623 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:14,623 INFO L353 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1, 1, 1] [2018-07-23 15:23:14,623 INFO L414 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1462444461, now seen corresponding path program 218 times [2018-07-23 15:23:14,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:16,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:16,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-23 15:23:16,546 INFO L450 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-23 15:23:16,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-23 15:23:16,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:23:16,549 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 221 states. [2018-07-23 15:23:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:17,478 INFO L93 Difference]: Finished difference Result 449 states and 451 transitions. [2018-07-23 15:23:17,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:23:17,478 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 442 [2018-07-23 15:23:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:17,479 INFO L225 Difference]: With dead ends: 449 [2018-07-23 15:23:17,479 INFO L226 Difference]: Without dead ends: 445 [2018-07-23 15:23:17,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:23:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-23 15:23:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-23 15:23:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-23 15:23:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 446 transitions. [2018-07-23 15:23:17,484 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 446 transitions. Word has length 442 [2018-07-23 15:23:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:17,484 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 446 transitions. [2018-07-23 15:23:17,484 INFO L472 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-23 15:23:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 446 transitions. [2018-07-23 15:23:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-23 15:23:17,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:17,486 INFO L353 BasicCegarLoop]: trace histogram [220, 219, 1, 1, 1, 1, 1] [2018-07-23 15:23:17,486 INFO L414 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:17,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1038379441, now seen corresponding path program 219 times [2018-07-23 15:23:17,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:19,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:19,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-23 15:23:19,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-23 15:23:19,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-23 15:23:19,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:23:19,498 INFO L87 Difference]: Start difference. First operand 445 states and 446 transitions. Second operand 222 states. [2018-07-23 15:23:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:20,277 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-23 15:23:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-23 15:23:20,278 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 444 [2018-07-23 15:23:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:20,278 INFO L225 Difference]: With dead ends: 451 [2018-07-23 15:23:20,278 INFO L226 Difference]: Without dead ends: 447 [2018-07-23 15:23:20,280 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:23:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-23 15:23:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-07-23 15:23:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-23 15:23:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 448 transitions. [2018-07-23 15:23:20,284 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 448 transitions. Word has length 444 [2018-07-23 15:23:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:20,284 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 448 transitions. [2018-07-23 15:23:20,284 INFO L472 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-23 15:23:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 448 transitions. [2018-07-23 15:23:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-23 15:23:20,286 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:20,286 INFO L353 BasicCegarLoop]: trace histogram [221, 220, 1, 1, 1, 1, 1] [2018-07-23 15:23:20,286 INFO L414 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1533788341, now seen corresponding path program 220 times [2018-07-23 15:23:20,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:22,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:22,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-23 15:23:22,145 INFO L450 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-23 15:23:22,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-23 15:23:22,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:23:22,151 INFO L87 Difference]: Start difference. First operand 447 states and 448 transitions. Second operand 223 states. [2018-07-23 15:23:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:23,247 INFO L93 Difference]: Finished difference Result 453 states and 455 transitions. [2018-07-23 15:23:23,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-23 15:23:23,247 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 446 [2018-07-23 15:23:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:23,248 INFO L225 Difference]: With dead ends: 453 [2018-07-23 15:23:23,248 INFO L226 Difference]: Without dead ends: 449 [2018-07-23 15:23:23,250 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:23:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-23 15:23:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-23 15:23:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-23 15:23:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2018-07-23 15:23:23,254 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 446 [2018-07-23 15:23:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:23,254 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2018-07-23 15:23:23,254 INFO L472 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-23 15:23:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2018-07-23 15:23:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-23 15:23:23,256 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:23,256 INFO L353 BasicCegarLoop]: trace histogram [222, 221, 1, 1, 1, 1, 1] [2018-07-23 15:23:23,256 INFO L414 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -880371385, now seen corresponding path program 221 times [2018-07-23 15:23:23,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:25,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:25,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-23 15:23:25,231 INFO L450 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-23 15:23:25,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-23 15:23:25,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:23:25,235 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand 224 states. [2018-07-23 15:23:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:26,743 INFO L93 Difference]: Finished difference Result 455 states and 457 transitions. [2018-07-23 15:23:26,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-23 15:23:26,743 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 448 [2018-07-23 15:23:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:26,743 INFO L225 Difference]: With dead ends: 455 [2018-07-23 15:23:26,743 INFO L226 Difference]: Without dead ends: 451 [2018-07-23 15:23:26,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:23:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-23 15:23:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-23 15:23:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-23 15:23:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-07-23 15:23:26,749 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 448 [2018-07-23 15:23:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:26,749 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-07-23 15:23:26,749 INFO L472 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-23 15:23:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-07-23 15:23:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-23 15:23:26,751 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:26,751 INFO L353 BasicCegarLoop]: trace histogram [223, 222, 1, 1, 1, 1, 1] [2018-07-23 15:23:26,751 INFO L414 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash -11901885, now seen corresponding path program 222 times [2018-07-23 15:23:26,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:23:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:23:28,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:23:28,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-23 15:23:28,784 INFO L450 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-23 15:23:28,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-23 15:23:28,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:23:28,787 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 225 states. [2018-07-23 15:23:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:23:30,600 INFO L93 Difference]: Finished difference Result 457 states and 459 transitions. [2018-07-23 15:23:30,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:23:30,601 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 450 [2018-07-23 15:23:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:23:30,601 INFO L225 Difference]: With dead ends: 457 [2018-07-23 15:23:30,601 INFO L226 Difference]: Without dead ends: 453 [2018-07-23 15:23:30,602 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:23:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-23 15:23:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-23 15:23:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-23 15:23:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 454 transitions. [2018-07-23 15:23:30,606 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 454 transitions. Word has length 450 [2018-07-23 15:23:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:23:30,606 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 454 transitions. [2018-07-23 15:23:30,606 INFO L472 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-23 15:23:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 454 transitions. [2018-07-23 15:23:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-23 15:23:30,608 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:23:30,608 INFO L353 BasicCegarLoop]: trace histogram [224, 223, 1, 1, 1, 1, 1] [2018-07-23 15:23:30,608 INFO L414 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:23:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1363632191, now seen corresponding path program 223 times [2018-07-23 15:23:30,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:23:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-23 15:23:31,906 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:23:31,912 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:23:31,912 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:23:31 BoogieIcfgContainer [2018-07-23 15:23:31,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:23:31,913 INFO L168 Benchmark]: Toolchain (without parser) took 259900.00 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -221.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-23 15:23:31,916 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:23:31,916 INFO L168 Benchmark]: Boogie Preprocessor took 46.94 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:23:31,916 INFO L168 Benchmark]: RCFGBuilder took 287.84 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:23:31,917 INFO L168 Benchmark]: TraceAbstraction took 259561.24 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -232.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-23 15:23:31,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.94 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 287.84 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259561.24 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -232.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was analyzing trace of length 453 with TraceHistMax 224, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 148 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 259.4s OverallTime, 224 OverallIterations, 224 TraceHistogramMax, 108.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1561 SDtfs, 0 SDslu, 58711 SDs, 0 SdLazy, 47689 SolverSat, 478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25199 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 24976 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 223 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 41.0s SatisfiabilityAnalysisTime, 96.4s InterpolantComputationTime, 50844 NumberOfCodeBlocks, 50844 NumberOfCodeBlocksAsserted, 223 NumberOfCheckSat, 50621 ConstructedInterpolants, 0 QuantifiedInterpolants, 45258519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 223 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3696448 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-23-31-927.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-23-31-927.csv Completed graceful shutdown